A lot of companies say they’re “mission-driven.” Our unique corporate structure guarantees that every decision we make upholds our mission: to ensure the internet remains open and accessible. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation.

Along with our communities of 20,000+ contributors and collaborators, Mozilla Corporation’s staff designs, builds, and distributes software that allows people to enjoy the internet on their own terms. Our flagship product — the Firefox browser — has expanded into a family of products that protects users and alerts them of risks, safeguards passwords and provides a secure VPN (with more to come).

By maintaining a safe, open internet we're helping humanity, while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.

mozilla

Why Thunderbird?
Thunderbird is one of the world’s most trusted open-source email applications, empowering more than 20 million people globally. At Thunderbird, we build privacy-respecting communication and productivity tools that help people manage their digital lives while staying in control of their data.
We are open source by design. Our products are developed transparently and in collaboration with a global community of contributors, and that same spirit shapes how we work: collaboratively, inclusively, and with a shared commitment to putting users first.
Our small but growing distributed team includes more than 65 people across seven countries. As Thunderbird evolves beyond a single desktop application, we are expanding across desktop, mobile, paid services, AI offerings, and enterprise-facing work to build independent, privacy-respecting alternatives to big tech ecosystems.
Our revenue model combines user donations, which help keep Thunderbird’s applications freely available, with paid services that cover the costs of hosted offerings while supporting long-term sustainability and continued innovation.
A note about Thunderbird and Mozilla: Thunderbird Technologies Corporation is the nonprofit-owned company behind Thunderbird email and a growing portfolio of products. While part of the Mozilla family, Thunderbird is a separate entity from Mozilla Corporation and Mozilla Foundation with its own compensation programs, benefits, and employment policies.
To learn more, visit&nbsp;<a href="http://www.thunderbird.net">www.thunderbird.net</a>
The opportunity
As a Staff Software Engineer, Services, you’ll help shape the architecture and technical direction of web-based products that extend Thunderbird beyond email. The Services team is currently focused on building offerings such as an appointment calendar and secure file storage and transfer solutions, creating valuable experiences for our users while supporting additional revenue streams for Thunderbird.
This is a Staff-level individual contributor role with significant technical ownership and influence. You’ll work with designers, engineers, and community members to write code, build prototypes, solve complex problems, and make technical decisions that shape our products. You’ll take a holistic view of our code and systems, helping establish the architecture and software patterns that allow our Services products to evolve and scale.
You’ll also take on broad, ambiguous problems that have a direct impact on our goals, from improving our technical architecture to helping grow Services users and subscribers. Along the way, you’ll provide technical and product direction across teams, mentor other engineers, and identify ways to make our systems and processes more sustainable, scalable, and easier to work with.
What you’ll do&nbsp;
<ul>
<li style="font-weight: 400;">Lead the technical architecture of new Services products, taking ownership of complex projects and identifying improvements that strengthen our systems as they evolve.</li>
<li style="font-weight: 400;">Write code, build prototypes and experiments, and contribute throughout the development lifecycle, from planning and testing through implementation, monitoring, and maintenance.</li>
<li style="font-weight: 400;">Help establish software patterns and make technical decisions across our Services products, including investigating and proposing technology choices.</li>
<li style="font-weight: 400;">Build and evolve analytics and infrastructure that help the team use user-generated data to inform decisions.</li>
<li style="font-weight: 400;">Take on ambiguous, high-level problems with broad scope and direct impact on Services goals, including growing users and subscribers.</li>
<li style="font-weight: 400;">Provide technical and product direction across Thunderbird and lead technical collaboration with other parts of Mozilla and community contributors when needed.</li>
<li style="font-weight: 400;">Work closely with the team and community to surface issues, refine ideas, and develop practical solutions.</li>
<li style="font-weight: 400;">Identify and plan improvements that make our systems and processes more accessible, self-serviceable, lower friction, sustainable, scalable, and easier to delegate.</li>
<li style="font-weight: 400;">Mentor other engineers through code review, documentation, technical discussions, process improvements, and ongoing guidance.</li>
<li style="font-weight: 400;">Stay current with evolving technologies, coding standards, libraries, and frameworks and apply that knowledge to your work.</li>
</ul>
What you bring&nbsp;
<ul>
<li style="font-weight: 400;">10+ years of web software development experience, including experience designing scalable and efficient systems and launching complex web projects at scale.</li>
<li style="font-weight: 400;">Expert-level JavaScript skills and knowledge of at least one additional programming language, such as Python, Rust, Go, or C++.</li>
<li style="font-weight: 400;">An understanding of the business landscape, including challenges and opportunities, and experience collaborating with teams to expand Thunderbird’s user and donor base.</li>
<li style="font-weight: 400;">Experience with front-end frameworks, full-stack development, and/or API development.</li>
<li style="font-weight: 400;">Strong knowledge of software development practices, including testing, code review, and documentation, and the ability to help others develop these skills.</li>
<li style="font-weight: 400;">Experience acting as a technical lead, solving complex technical problems, and providing mentorship and guidance to other engineers.</li>
<li style="font-weight: 400;">Experience collaborating remotely across disciplines such as engineering, product management, QA, and design.</li>
<li style="font-weight: 400;">Excellent written and verbal English communication and documentation skills, with the ability to communicate clearly and concisely with an international, geographically distributed team.</li>
<li style="font-weight: 400;">Comfort working in an open-source environment and a commitment to Mozilla values.</li>
<li style="font-weight: 400;">Ability to learn, evaluate, and responsibly use emerging technologies, including AI-enabled tools, to improve work processes.&nbsp;</li>
<li style="font-weight: 400;">A commitment to continuous learning and staying current with industry trends and technologies.</li>
<li style="font-weight: 400;">Ability and willingness to travel periodically, including internationally.</li>
</ul>
Bonus points for
<ul>
<li style="font-weight: 400;">Experience with product management or product-focused work.</li>
</ul>
What success looks like
Success in this role will look like a strong technical leader who not only helps the Web Services team grow, but also has a direct hand in helping Thunderbird grow and evolve our product offerings.&nbsp;
Over time, your work will help:
<ul>
<li style="font-weight: 400;">Grow &amp; mature scalable, modern software patterns and architecture across Web Services products.</li>
<li style="font-weight: 400;">Turn new product ideas and complex technical problems into working solutions, prototypes, and experiments.</li>
<li style="font-weight: 400;">Partner with leadership and cross-functional partners (Product, Design, etc) to help generate data-driven product decisions.</li>
<li style="font-weight: 400;">Provide clear technical and product direction across complex, cross-functional work.</li>
<li style="font-weight: 400;">Help other engineers grow their technical, collaboration, and leadership skills.</li>
<li style="font-weight: 400;">Support the growth of users and subscribers as Thunderbird expands its offerings beyond email.</li>
</ul>
Work environment
This is a full-time, fully remote position. You’ll join a distributed team of Thunderbird staff, open-source community members, and contributors from around the world.
We rely on clear communication, thoughtful documentation, and collaborative decision-making to work effectively across time zones and disciplines.
In this role, you’ll collaborate closely with designers, engineers, cross-functional teams across Thunderbird, other parts of Mozilla, and community contributors.
Compensation &amp; benefits
We benchmark our base salaries to local markets and target the 60th percentile of the peer market. The salary ranges for this role are:
<ul>
<li style="font-weight: 400;">US: $180,000 - $215,000 USD</li>
<li style="font-weight: 400;">Canada: $155,000 - $190,000 CAD</li>
</ul>
We may consider candidates with strong skills but less than the required experience. Title, level and compensation will be determined based on qualifications and experience.
In addition to competitive salaries, we offer a comprehensive benefits package designed to support your whole self.
Work &amp; career
<ul>
<li style="font-weight: 400;">Fully remote work &amp; schedule flexibility</li>
<li style="font-weight: 400;">Company-provided laptop</li>
<li style="font-weight: 400;">Annual bonus program</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Monthly remote work stipend</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Annual professional development stipend</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Access to&nbsp;Coursera learning platform</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Industry conferences</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Company all-hands and team gatherings</li>
</ul>
Rest &amp; play
<ul>
<li style="font-weight: 400; color: rgb(0, 0, 0);">24 days PTO per year (prorated)&nbsp;</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Your birthday</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Year-end company shutdown</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">9 wellbeing days&nbsp;</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Public holidays</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Other paid leave</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Quarterly wellbeing stipend for personal / family activities</li>
</ul>
Health &amp; family
<ul>
<li style="font-weight: 400; color: rgb(0, 0, 0);">401(k) / RRSP contributions</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Health, dental, &amp; vision insurance</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Disability insurance</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Life insurance</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Employee assistance program&nbsp;</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Paid parental leave</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Paid sick days&nbsp;</li>
</ul>
Work eligibility
Applicants must reside in and have permanent work authorization for the country location(s) specified in the posting. We are unable to consider applicants outside of these markets at this time. And, we do not provide visa sponsorship.
How to apply
Please apply directly through our <a style="color: rgb(0, 0, 0);" href="https://www.mozilla.org/en-US/careers/listings/?team=MZLA/Thunderbird">career page</a>. We carefully review every cover letter and screening question, so take the time to answer each fully. We value authentic, thoughtful responses that reflect your own experience and perspective. It is fine to use AI tools to polish your writing, but your answers should be your own. Candidates who submit generic or unoriginal AI-generated responses may be disqualified from further consideration.
Our commitment to diversity, equity, and inclusion
Thunderbird believes in the value of diverse creative practices and forms of knowledge, and knows diversity, equity and inclusion are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities and expressions.
We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Thunderbird will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.&nbsp;
We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at hiringaccommodations@thunderbird.net to request accommodation.
#LI-DNI

Staff Software Engineer, Web Application Services

Why Thunderbird?
Thunderbird is one of the world’s most trusted open-source email applications, empowering more than 20 million people globally. At Thunderbird, we build privacy-respecting communication and productivity tools that help people manage their digital lives while staying in control of their data.
We are open source by design. Our products are developed transparently and in collaboration with a global community of contributors, and that same spirit shapes how we work: collaboratively, inclusively, and with a shared commitment to putting users first.
Our small but growing distributed team includes more than 65 people across seven countries. As Thunderbird evolves beyond a single desktop application, we are expanding across desktop, mobile, paid services, AI offerings, and enterprise-facing work to build independent, privacy-respecting alternatives to big tech ecosystems.
Our revenue model combines user donations, which help keep Thunderbird’s applications freely available, with paid services that cover the costs of hosted offerings while supporting long-term sustainability and continued innovation.
A note about Thunderbird and Mozilla: Thunderbird Technologies Corporation is the nonprofit-owned company behind Thunderbird email and a growing portfolio of products. While part of the Mozilla family, Thunderbird is a separate entity from Mozilla Corporation and Mozilla Foundation with its own compensation programs, benefits, and employment policies.
To learn more, visit&nbsp;<a href="http://www.thunderbird.net">www.thunderbird.net</a>
The opportunity
As a Staff Software Engineer, Services, you’ll help shape the architecture and technical direction of web-based products that extend Thunderbird beyond email. The Services team is currently focused on building offerings such as an appointment calendar and secure file storage and transfer solutions, creating valuable experiences for our users while supporting additional revenue streams for Thunderbird.
This is a Staff-level individual contributor role with significant technical ownership and influence. You’ll work with designers, engineers, and community members to write code, build prototypes, solve complex problems, and make technical decisions that shape our products. You’ll take a holistic view of our code and systems, helping establish the architecture and software patterns that allow our Services products to evolve and scale.
You’ll also take on broad, ambiguous problems that have a direct impact on our goals, from improving our technical architecture to helping grow Services users and subscribers. Along the way, you’ll provide technical and product direction across teams, mentor other engineers, and identify ways to make our systems and processes more sustainable, scalable, and easier to work with.
What you’ll do&nbsp;
<ul>
<li style="font-weight: 400;">Lead the technical architecture of new Services products, taking ownership of complex projects and identifying improvements that strengthen our systems as they evolve.</li>
<li style="font-weight: 400;">Write code, build prototypes and experiments, and contribute throughout the development lifecycle, from planning and testing through implementation, monitoring, and maintenance.</li>
<li style="font-weight: 400;">Help establish software patterns and make technical decisions across our Services products, including investigating and proposing technology choices.</li>
<li style="font-weight: 400;">Build and evolve analytics and infrastructure that help the team use user-generated data to inform decisions.</li>
<li style="font-weight: 400;">Take on ambiguous, high-level problems with broad scope and direct impact on Services goals, including growing users and subscribers.</li>
<li style="font-weight: 400;">Provide technical and product direction across Thunderbird and lead technical collaboration with other parts of Mozilla and community contributors when needed.</li>
<li style="font-weight: 400;">Work closely with the team and community to surface issues, refine ideas, and develop practical solutions.</li>
<li style="font-weight: 400;">Identify and plan improvements that make our systems and processes more accessible, self-serviceable, lower friction, sustainable, scalable, and easier to delegate.</li>
<li style="font-weight: 400;">Mentor other engineers through code review, documentation, technical discussions, process improvements, and ongoing guidance.</li>
<li style="font-weight: 400;">Stay current with evolving technologies, coding standards, libraries, and frameworks and apply that knowledge to your work.</li>
</ul>
What you bring&nbsp;
<ul>
<li style="font-weight: 400;">10+ years of web software development experience, including experience designing scalable and efficient systems and launching complex web projects at scale.</li>
<li style="font-weight: 400;">Expert-level JavaScript skills and knowledge of at least one additional programming language, such as Python, Rust, Go, or C++.</li>
<li style="font-weight: 400;">An understanding of the business landscape, including challenges and opportunities, and experience collaborating with teams to expand Thunderbird’s user and donor base.</li>
<li style="font-weight: 400;">Experience with front-end frameworks, full-stack development, and/or API development.</li>
<li style="font-weight: 400;">Strong knowledge of software development practices, including testing, code review, and documentation, and the ability to help others develop these skills.</li>
<li style="font-weight: 400;">Experience acting as a technical lead, solving complex technical problems, and providing mentorship and guidance to other engineers.</li>
<li style="font-weight: 400;">Experience collaborating remotely across disciplines such as engineering, product management, QA, and design.</li>
<li style="font-weight: 400;">Excellent written and verbal English communication and documentation skills, with the ability to communicate clearly and concisely with an international, geographically distributed team.</li>
<li style="font-weight: 400;">Comfort working in an open-source environment and a commitment to Mozilla values.</li>
<li style="font-weight: 400;">Ability to learn, evaluate, and responsibly use emerging technologies, including AI-enabled tools, to improve work processes.&nbsp;</li>
<li style="font-weight: 400;">A commitment to continuous learning and staying current with industry trends and technologies.</li>
<li style="font-weight: 400;">Ability and willingness to travel periodically, including internationally.</li>
</ul>
Bonus points for
<ul>
<li style="font-weight: 400;">Experience with product management or product-focused work.</li>
</ul>
What success looks like
Success in this role will look like a strong technical leader who not only helps the Web Services team grow, but also has a direct hand in helping Thunderbird grow and evolve our product offerings.&nbsp;
Over time, your work will help:
<ul>
<li style="font-weight: 400;">Grow &amp; mature scalable, modern software patterns and architecture across Web Services products.</li>
<li style="font-weight: 400;">Turn new product ideas and complex technical problems into working solutions, prototypes, and experiments.</li>
<li style="font-weight: 400;">Partner with leadership and cross-functional partners (Product, Design, etc) to help generate data-driven product decisions.</li>
<li style="font-weight: 400;">Provide clear technical and product direction across complex, cross-functional work.</li>
<li style="font-weight: 400;">Help other engineers grow their technical, collaboration, and leadership skills.</li>
<li style="font-weight: 400;">Support the growth of users and subscribers as Thunderbird expands its offerings beyond email.</li>
</ul>
Work environment
This is a full-time, fully remote position. You’ll join a distributed team of Thunderbird staff, open-source community members, and contributors from around the world.
We rely on clear communication, thoughtful documentation, and collaborative decision-making to work effectively across time zones and disciplines.
In this role, you’ll collaborate closely with designers, engineers, cross-functional teams across Thunderbird, other parts of Mozilla, and community contributors.
Compensation &amp; benefits
We benchmark our base salaries to local markets and target the 60th percentile of the peer market. The salary ranges for this role are:
<ul>
<li style="font-weight: 400;">Canada: $155,000 - $190,000 CAD</li>
</ul>
We may consider candidates with strong skills but less than the required experience. Title, level and compensation will be determined based on qualifications and experience.
In addition to competitive salaries, we offer a comprehensive benefits package designed to support your whole self.
Work &amp; career
<ul>
<li style="font-weight: 400;">Fully remote work &amp; schedule flexibility</li>
<li style="font-weight: 400;">Company-provided laptop</li>
<li style="font-weight: 400;">Annual bonus program</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Monthly remote work stipend</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Annual professional development stipend</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Access to&nbsp;Coursera learning platform</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Industry conferences</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Company all-hands and team gatherings</li>
</ul>
Rest &amp; play
<ul>
<li style="font-weight: 400; color: rgb(0, 0, 0);">24 days PTO per year (prorated)&nbsp;</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Your birthday</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Year-end company shutdown</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">9 wellbeing days&nbsp;</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Public holidays</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Other paid leave</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Quarterly wellbeing stipend for personal / family activities</li>
</ul>
Health &amp; family
<ul>
<li style="font-weight: 400; color: rgb(0, 0, 0);">RRSP contributions</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Health, dental, &amp; vision insurance</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Disability insurance</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Life insurance</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Employee assistance program&nbsp;</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Paid parental leave</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Paid sick days&nbsp;</li>
</ul>
Work eligibility
Applicants must reside in and have permanent work authorization for the country location(s) specified in the posting. We are unable to consider applicants outside of these markets at this time. And, we do not provide visa sponsorship.
How to apply
Please apply directly through our <a style="color: rgb(0, 0, 0);" href="https://www.mozilla.org/en-US/careers/listings/?team=MZLA/Thunderbird">career page</a>. We carefully review every cover letter and screening question, so take the time to answer each fully. We value authentic, thoughtful responses that reflect your own experience and perspective. It is fine to use AI tools to polish your writing, but your answers should be your own. Candidates who submit generic or unoriginal AI-generated responses may be disqualified from further consideration.
Our commitment to diversity, equity, and inclusion
Thunderbird believes in the value of diverse creative practices and forms of knowledge, and knows diversity, equity and inclusion are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities and expressions.
We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Thunderbird will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.&nbsp;
We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at hiringaccommodations@thunderbird.net to request accommodation.
#LI-DNI

Why Thunderbird?
Thunderbird is one of the world’s most trusted open-source email applications, empowering more than 20 million people globally. At Thunderbird, we build privacy-respecting communication and productivity tools that help people manage their digital lives while staying in control of their data.
We are open source by design. Our products are developed transparently and in collaboration with a global community of contributors, and that same spirit shapes how we work: collaboratively, inclusively, and with a shared commitment to putting users first.
Our small but growing distributed team includes more than 65 people across seven countries. As Thunderbird evolves beyond a single desktop application, we are expanding across desktop, mobile, paid services, AI offerings, and enterprise-facing work to build independent, privacy-respecting alternatives to big tech ecosystems.
Our revenue model combines user donations, which help keep Thunderbird’s applications freely available, with paid services that cover the costs of hosted offerings while supporting long-term sustainability and continued innovation.
A note about Thunderbird and Mozilla: Thunderbird Technologies Corporation is the nonprofit-owned company behind Thunderbird email and a growing portfolio of products. While part of the Mozilla family, Thunderbird is a separate entity from Mozilla Corporation and Mozilla Foundation with its own compensation programs, benefits, and employment policies.
To learn more, visit&nbsp;<a href="http://www.thunderbird.net">www.thunderbird.net</a>
The opportunity
As a Staff Software Engineer, Services, you’ll help shape the architecture and technical direction of web-based products that extend Thunderbird beyond email. The Services team is currently focused on building offerings such as an appointment calendar and secure file storage and transfer solutions, creating valuable experiences for our users while supporting additional revenue streams for Thunderbird.
This is a Staff-level individual contributor role with significant technical ownership and influence. You’ll work with designers, engineers, and community members to write code, build prototypes, solve complex problems, and make technical decisions that shape our products. You’ll take a holistic view of our code and systems, helping establish the architecture and software patterns that allow our Services products to evolve and scale.
You’ll also take on broad, ambiguous problems that have a direct impact on our goals, from improving our technical architecture to helping grow Services users and subscribers. Along the way, you’ll provide technical and product direction across teams, mentor other engineers, and identify ways to make our systems and processes more sustainable, scalable, and easier to work with.
What you’ll do&nbsp;
<ul>
<li style="font-weight: 400;">Lead the technical architecture of new Services products, taking ownership of complex projects and identifying improvements that strengthen our systems as they evolve.</li>
<li style="font-weight: 400;">Write code, build prototypes and experiments, and contribute throughout the development lifecycle, from planning and testing through implementation, monitoring, and maintenance.</li>
<li style="font-weight: 400;">Help establish software patterns and make technical decisions across our Services products, including investigating and proposing technology choices.</li>
<li style="font-weight: 400;">Build and evolve analytics and infrastructure that help the team use user-generated data to inform decisions.</li>
<li style="font-weight: 400;">Take on ambiguous, high-level problems with broad scope and direct impact on Services goals, including growing users and subscribers.</li>
<li style="font-weight: 400;">Provide technical and product direction across Thunderbird and lead technical collaboration with other parts of Mozilla and community contributors when needed.</li>
<li style="font-weight: 400;">Work closely with the team and community to surface issues, refine ideas, and develop practical solutions.</li>
<li style="font-weight: 400;">Identify and plan improvements that make our systems and processes more accessible, self-serviceable, lower friction, sustainable, scalable, and easier to delegate.</li>
<li style="font-weight: 400;">Mentor other engineers through code review, documentation, technical discussions, process improvements, and ongoing guidance.</li>
<li style="font-weight: 400;">Stay current with evolving technologies, coding standards, libraries, and frameworks and apply that knowledge to your work.</li>
</ul>
What you bring&nbsp;
<ul>
<li style="font-weight: 400;">10+ years of web software development experience, including experience designing scalable and efficient systems and launching complex web projects at scale.</li>
<li style="font-weight: 400;">Expert-level JavaScript skills and knowledge of at least one additional programming language, such as Python, Rust, Go, or C++.</li>
<li style="font-weight: 400;">An understanding of the business landscape, including challenges and opportunities, and experience collaborating with teams to expand Thunderbird’s user and donor base.</li>
<li style="font-weight: 400;">Experience with front-end frameworks, full-stack development, and/or API development.</li>
<li style="font-weight: 400;">Strong knowledge of software development practices, including testing, code review, and documentation, and the ability to help others develop these skills.</li>
<li style="font-weight: 400;">Experience acting as a technical lead, solving complex technical problems, and providing mentorship and guidance to other engineers.</li>
<li style="font-weight: 400;">Experience collaborating remotely across disciplines such as engineering, product management, QA, and design.</li>
<li style="font-weight: 400;">Excellent written and verbal English communication and documentation skills, with the ability to communicate clearly and concisely with an international, geographically distributed team.</li>
<li style="font-weight: 400;">Comfort working in an open-source environment and a commitment to Mozilla values.</li>
<li style="font-weight: 400;">Ability to learn, evaluate, and responsibly use emerging technologies, including AI-enabled tools, to improve work processes.&nbsp;</li>
<li style="font-weight: 400;">A commitment to continuous learning and staying current with industry trends and technologies.</li>
<li style="font-weight: 400;">Ability and willingness to travel periodically, including internationally.</li>
</ul>
Bonus points for
<ul>
<li style="font-weight: 400;">Experience with product management or product-focused work.</li>
</ul>
What success looks like
Success in this role will look like a strong technical leader who not only helps the Web Services team grow, but also has a direct hand in helping Thunderbird grow and evolve our product offerings.&nbsp;
Over time, your work will help:
<ul>
<li style="font-weight: 400;">Grow &amp; mature scalable, modern software patterns and architecture across Web Services products.</li>
<li style="font-weight: 400;">Turn new product ideas and complex technical problems into working solutions, prototypes, and experiments.</li>
<li style="font-weight: 400;">Partner with leadership and cross-functional partners (Product, Design, etc) to help generate data-driven product decisions.</li>
<li style="font-weight: 400;">Provide clear technical and product direction across complex, cross-functional work.</li>
<li style="font-weight: 400;">Help other engineers grow their technical, collaboration, and leadership skills.</li>
<li style="font-weight: 400;">Support the growth of users and subscribers as Thunderbird expands its offerings beyond email.</li>
</ul>
Work environment
This is a full-time, fully remote position. You’ll join a distributed team of Thunderbird staff, open-source community members, and contributors from around the world.
We rely on clear communication, thoughtful documentation, and collaborative decision-making to work effectively across time zones and disciplines.
In this role, you’ll collaborate closely with designers, engineers, cross-functional teams across Thunderbird, other parts of Mozilla, and community contributors.
Compensation &amp; benefits
We benchmark our base salaries to local markets and target the 60th percentile of the peer market. The salary ranges for this role are:
<ul>
<li style="font-weight: 400;">US: $180,000 - $215,000 USD</li>
</ul>
We may consider candidates with strong skills but less than the required experience. Title, level and compensation will be determined based on qualifications and experience.
In addition to competitive salaries, we offer a comprehensive benefits package designed to support your whole self.
Work &amp; career
<ul>
<li style="font-weight: 400;">Fully remote work &amp; schedule flexibility</li>
<li style="font-weight: 400;">Company-provided laptop</li>
<li style="font-weight: 400;">Annual bonus program</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Monthly remote work stipend</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Annual professional development stipend</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Access to&nbsp;Coursera learning platform</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Industry conferences</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Company all-hands and team gatherings</li>
</ul>
Rest &amp; play
<ul>
<li style="font-weight: 400; color: rgb(0, 0, 0);">24 days PTO per year (prorated)&nbsp;</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Your birthday</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Year-end company shutdown</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">9 wellbeing days&nbsp;</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Public holidays</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Other paid leave</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Quarterly wellbeing stipend for personal / family activities</li>
</ul>
Health &amp; family
<ul>
<li style="font-weight: 400; color: rgb(0, 0, 0);">401(k) contributions</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Health, dental, &amp; vision insurance</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Disability insurance</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Life insurance</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Employee assistance program&nbsp;</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Paid parental leave</li>
<li style="font-weight: 400; color: rgb(0, 0, 0);">Paid sick days&nbsp;</li>
</ul>
Work eligibility
Applicants must reside in and have permanent work authorization for the country location(s) specified in the posting. We are unable to consider applicants outside of these markets at this time. And, we do not provide visa sponsorship.
How to apply
Please apply directly through our <a style="color: rgb(0, 0, 0);" href="https://www.mozilla.org/en-US/careers/listings/?team=MZLA/Thunderbird">career page</a>. We carefully review every cover letter and screening question, so take the time to answer each fully. We value authentic, thoughtful responses that reflect your own experience and perspective. It is fine to use AI tools to polish your writing, but your answers should be your own. Candidates who submit generic or unoriginal AI-generated responses may be disqualified from further consideration.
Our commitment to diversity, equity, and inclusion
Thunderbird believes in the value of diverse creative practices and forms of knowledge, and knows diversity, equity and inclusion are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities and expressions.
We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Thunderbird will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.&nbsp;
We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at hiringaccommodations@thunderbird.net to request accommodation.
#LI-DNI

<div class="gmail_default" style="font-size: small;">
<div>
Why Mozilla?
Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people.&nbsp;
The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.&nbsp;
About this role:
As a Senior Software Engineer on the Ecosystem Services Team, you’ll build and own back-end systems and the integrations that keep our services running, help maintain and evolve the cloud infrastructure the application runs on, and play an active role in keeping the service reliable and healthy in production. You'll do this while collaborating closely with frontend engineers, product managers, CloudEng, and UX and design partners to deliver reliable features.
We are looking for engineers who treat the systems they build as their own: people who are comfortable owning a service end to end, from writing the code to verifying it works as intended in production and monitoring its health.&nbsp;
We are hiring for multiple Ecosystem Services Team back-end teams - each solving their own unique challenges to make the web better for everyone. More details about all hiring teams will be shared in the interviews.&nbsp;
About Ecosystem Services:
Ecosystem Services builds and operates the back-end platforms that power Mozilla products and services, with a focus on privacy, security, and delivering critical functionality to Firefox and millions of users worldwide.
Our portfolio spans a diverse set of platforms and services. Representative examples include Privacy Services, which provides the APIs and infrastructure behind Mozilla VPN, Relay (email and phone aliasing), and Monitor (data breach detection and remediation); AutoPush, Mozilla's Web Push platform for securely delivering notifications and real-time updates to Firefox clients; and Remote Settings, Mozilla's platform for delivering configuration updates to Firefox outside the regular release cycle. Together with many other backend platforms across the organization, these services help deliver secure, reliable experiences to Mozilla users every day.
Our teams own services end-to-end from designing and building distributed systems, to operating them in production, improving reliability, and evolving the cloud infrastructure they run on. We work closely with product, frontend engineering, Cloud Engineering, UX, and design partners to build resilient systems that make the web better for everyone.
We're hiring backend engineers across multiple Ecosystem Services teams, each tackling different technical challenges while sharing a culture of ownership, collaboration, and operational excellence. More details about the specific teams and domains will be shared during the interview process.
What you’ll do:&nbsp;
<ul>
<li style="font-weight: 400;">Lead backend development, building and maintaining server-side logic</li>
<li style="font-weight: 400;">Take real ownership of the services you work on: deploy them, operate them, and keep them healthy in production rather than handing them off</li>
<li style="font-weight: 400;">Work closely with our CloudEng Team to maintain and improve production environments, including monitoring and alerting with tools such as OpenTelemetry, Sentry, Prometheus, and Grafana</li>
<li style="font-weight: 400;">Participate in an on-call / off-hours support rotation, triaging and resolving production issues, partnering with CloudEng and support teams to investigate incidents, address bug reports, and keep the application running reliably</li>
<li style="font-weight: 400;">Periodically rotate into a support role, handling releases, dependency updates, and incoming work requests from customer support and other stakeholders</li>
<li style="font-weight: 400;">Thoughtfully apply AI-assisted development tools to move faster and raise quality, while maintaining good judgment about where they fit and where they don't</li>
<li style="font-weight: 400;">Partner with and support stakeholders (e.g. front-end, platform), ensuring backend systems, APIs, and data contracts meet their needs</li>
<li style="font-weight: 400;">Partner with frontend and cross-functional teams to align on project goals, contribute to API design, and ensure backend systems, APIs, and data contracts meet their needs</li>
<li style="font-weight: 400;">Participate in code reviews to maintain high standards of code quality and system reliability</li>
<li style="font-weight: 400;">Participate in security and privacy reviews, ensuring all data protection measures meet compliance standards</li>
</ul>
What you’ll bring:&nbsp;
<ul>
<li style="font-weight: 400;">4+ years of experience in software development with a strong focus on backend technologies</li>
<li style="font-weight: 400;">Strong professional experience with Python , TypeScript/Node.js, or Rust building back-end services and confidence leading back-end engineering projects.</li>
<li style="font-weight: 400;">Proficiency with PostgreSQL and SQL query optimization, including relational schema design and migrations with a query builder such as Knex</li>
<li style="font-weight: 400;">Hands-on DevOps experience on Google Cloud Platform (GCP), with Docker-based build and deploy pipelines. You are comfortable deploying, operating, and troubleshooting services in the cloud rather than handing that responsibility to someone else</li>
<li style="font-weight: 400;">Hands-on experience with observability and monitoring tooling such as Sentry and Grafana</li>
<li style="font-weight: 400;">A pragmatic commitment to shipping quality work. You care about the quality and reliability of what you ship, you make sensible trade-offs under real constraints, and you consistently move work to and into production.</li>
<li style="font-weight: 400;">Strong engineering judgment. You can navigate ambiguity, weigh trade-offs, and make sound decisions with incomplete information, and you know when to ask for input</li>
<li style="font-weight: 400;">A genuine ownership mindset. You are excited to own a service end to end and have a track record of operating what you build in production, including experience with on-call or off-hours production support</li>
<li style="font-weight: 400;">Experience mentoring junior engineers and driving technical excellence in code quality, testing, and process improvements</li>
</ul>
Bonus Points for experience with:
<ul>
<li style="font-weight: 400;">Performance / load testing&nbsp;</li>
<li style="font-weight: 400;">Experience with IaC tools such as Terraform and Kubernetes</li>
<li style="font-weight: 400;">Open-source contributions or personal engineering projects</li>
<li style="font-weight: 400;">Django experience</li>
</ul>
What you’ll get:
<ul>
<li style="font-weight: 400;">Generous performance-based bonus plans to all eligible employees - we share in our success as one team</li>
<li style="font-weight: 400;">Rich medical, dental, and vision coverage</li>
<li style="font-weight: 400;">Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)</li>
<li style="font-weight: 400;">Quarterly all-company wellness days where everyone takes a pause together</li>
<li style="font-weight: 400;">Country specific holidays plus a day off for your birthday</li>
<li style="font-weight: 400;">One-time home office stipend</li>
<li style="font-weight: 400;">Annual professional development budget</li>
<li style="font-weight: 400;">Quarterly well-being stipend</li>
<li style="font-weight: 400;">Considerable paid parental leave</li>
<li style="font-weight: 400;">Employee referral bonus program</li>
<li style="font-weight: 400;">Other benefits (life/AD&amp;D, disability, EAP, etc. - varies by country)</li>
</ul>
About Mozilla&nbsp;
Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.
Commitment to diversity, equity, inclusion, and belonging
Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission.&nbsp; We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions.
We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at <a class="external-link" href="mailto:hiringaccommodation@mozilla.com">hiringaccommodation@mozilla.com</a> to request accommodation.
We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws.&nbsp; Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.
Group: D
#LI-REMOTE
Req ID: R3234
</div>
</div><div class="content-pay-transparency"><div class="pay-input"><div class="description">Hiring Ranges:</div><div class="title">Canada Tier 1 Locations</div><div class="pay-range">$104,000&mdash;$139,000 CAD</div></div><div class="pay-input"><div class="title">Canada Tier 2 Locations</div><div class="pay-range">$95,000&mdash;$126,000 CAD</div></div></div>

Senior Software Engineer

<div class="gmail_default" style="font-size: small;">
<div>
<div>To learn the Hiring Ranges for this position, please select your location from the Apply Now dropdown menu.</div>
To learn more about our Hiring Range System, please click this <a href="https://docs.google.com/document/d/1ylUe7Ou0EbsOtGRBtUv1sSld3lbZ4mrYzo59tEkSjY8/edit?usp=sharing" target="_blank">link.</a>
Why Mozilla?
Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people.&nbsp;
The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.&nbsp;
About this role:
As a Senior Software Engineer on the Ecosystem Services Team, you’ll build and own back-end systems and the integrations that keep our services running, help maintain and evolve the cloud infrastructure the application runs on, and play an active role in keeping the service reliable and healthy in production. You'll do this while collaborating closely with frontend engineers, product managers, CloudEng, and UX and design partners to deliver reliable features.
We are looking for engineers who treat the systems they build as their own: people who are comfortable owning a service end to end, from writing the code to verifying it works as intended in production and monitoring its health.&nbsp;
We are hiring for multiple Ecosystem Services Team back-end teams - each solving their own unique challenges to make the web better for everyone. More details about all hiring teams will be shared in the interviews.&nbsp;
About Ecosystem Services:
Ecosystem Services builds and operates the back-end platforms that power Mozilla products and services, with a focus on privacy, security, and delivering critical functionality to Firefox and millions of users worldwide.
Our portfolio spans a diverse set of platforms and services. Representative examples include Privacy Services, which provides the APIs and infrastructure behind Mozilla VPN, Relay (email and phone aliasing), and Monitor (data breach detection and remediation); AutoPush, Mozilla's Web Push platform for securely delivering notifications and real-time updates to Firefox clients; and Remote Settings, Mozilla's platform for delivering configuration updates to Firefox outside the regular release cycle. Together with many other backend platforms across the organization, these services help deliver secure, reliable experiences to Mozilla users every day.
Our teams own services end-to-end from designing and building distributed systems, to operating them in production, improving reliability, and evolving the cloud infrastructure they run on. We work closely with product, frontend engineering, Cloud Engineering, UX, and design partners to build resilient systems that make the web better for everyone.
We're hiring backend engineers across multiple Ecosystem Services teams, each tackling different technical challenges while sharing a culture of ownership, collaboration, and operational excellence. More details about the specific teams and domains will be shared during the interview process.
What you’ll do:&nbsp;
<ul>
<li style="font-weight: 400;">Lead backend development, building and maintaining server-side logic</li>
<li style="font-weight: 400;">Take real ownership of the services you work on: deploy them, operate them, and keep them healthy in production rather than handing them off</li>
<li style="font-weight: 400;">Work closely with our CloudEng Team to maintain and improve production environments, including monitoring and alerting with tools such as OpenTelemetry, Sentry, Prometheus, and Grafana</li>
<li style="font-weight: 400;">Participate in an on-call / off-hours support rotation, triaging and resolving production issues, partnering with CloudEng and support teams to investigate incidents, address bug reports, and keep the application running reliably</li>
<li style="font-weight: 400;">Periodically rotate into a support role, handling releases, dependency updates, and incoming work requests from customer support and other stakeholders</li>
<li style="font-weight: 400;">Thoughtfully apply AI-assisted development tools to move faster and raise quality, while maintaining good judgment about where they fit and where they don't</li>
<li style="font-weight: 400;">Partner with and support stakeholders (e.g. front-end, platform), ensuring backend systems, APIs, and data contracts meet their needs</li>
<li style="font-weight: 400;">Partner with frontend and cross-functional teams to align on project goals, contribute to API design, and ensure backend systems, APIs, and data contracts meet their needs</li>
<li style="font-weight: 400;">Participate in code reviews to maintain high standards of code quality and system reliability</li>
<li style="font-weight: 400;">Participate in security and privacy reviews, ensuring all data protection measures meet compliance standards</li>
</ul>
What you’ll bring:&nbsp;
<ul>
<li style="font-weight: 400;">4+ years of experience in software development with a strong focus on backend technologies</li>
<li style="font-weight: 400;">Strong professional experience with Python , TypeScript/Node.js, or Rust building back-end services and confidence leading back-end engineering projects.</li>
<li style="font-weight: 400;">Proficiency with PostgreSQL and SQL query optimization, including relational schema design and migrations with a query builder such as Knex</li>
<li style="font-weight: 400;">Hands-on DevOps experience on Google Cloud Platform (GCP), with Docker-based build and deploy pipelines. You are comfortable deploying, operating, and troubleshooting services in the cloud rather than handing that responsibility to someone else</li>
<li style="font-weight: 400;">Hands-on experience with observability and monitoring tooling such as Sentry and Grafana</li>
<li style="font-weight: 400;">A pragmatic commitment to shipping quality work. You care about the quality and reliability of what you ship, you make sensible trade-offs under real constraints, and you consistently move work to and into production.</li>
<li style="font-weight: 400;">Strong engineering judgment. You can navigate ambiguity, weigh trade-offs, and make sound decisions with incomplete information, and you know when to ask for input</li>
<li style="font-weight: 400;">A genuine ownership mindset. You are excited to own a service end to end and have a track record of operating what you build in production, including experience with on-call or off-hours production support</li>
<li style="font-weight: 400;">Experience mentoring junior engineers and driving technical excellence in code quality, testing, and process improvements</li>
</ul>
Bonus Points for experience with:
<ul>
<li style="font-weight: 400;">Performance / load testing&nbsp;</li>
<li style="font-weight: 400;">Experience with IaC tools such as Terraform and Kubernetes</li>
<li style="font-weight: 400;">Open-source contributions or personal engineering projects</li>
<li style="font-weight: 400;">Django experience</li>
</ul>
What you’ll get:
<ul>
<li style="font-weight: 400;">Generous performance-based bonus plans to all eligible employees - we share in our success as one team</li>
<li style="font-weight: 400;">Rich medical, dental, and vision coverage</li>
<li style="font-weight: 400;">Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)</li>
<li style="font-weight: 400;">Quarterly all-company wellness days where everyone takes a pause together</li>
<li style="font-weight: 400;">Country specific holidays plus a day off for your birthday</li>
<li style="font-weight: 400;">One-time home office stipend</li>
<li style="font-weight: 400;">Annual professional development budget</li>
<li style="font-weight: 400;">Quarterly well-being stipend</li>
<li style="font-weight: 400;">Considerable paid parental leave</li>
<li style="font-weight: 400;">Employee referral bonus program</li>
<li style="font-weight: 400;">Other benefits (life/AD&amp;D, disability, EAP, etc. - varies by country)</li>
</ul>
About Mozilla&nbsp;
Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.
Commitment to diversity, equity, inclusion, and belonging
Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission.&nbsp; We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions.
We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at <a class="external-link" href="mailto:hiringaccommodation@mozilla.com">hiringaccommodation@mozilla.com</a> to request accommodation.
We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws.&nbsp; Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.
Group: D
#LI-DNI
Req ID: R3234
</div>
</div>

<div class="gmail_default" style="font-size: small;">
<div>
Why Mozilla?
Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people.&nbsp;
The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.&nbsp;
About this role:
As a Senior Software Engineer on the Ecosystem Services Team, you’ll build and own back-end systems and the integrations that keep our services running, help maintain and evolve the cloud infrastructure the application runs on, and play an active role in keeping the service reliable and healthy in production. You'll do this while collaborating closely with frontend engineers, product managers, CloudEng, and UX and design partners to deliver reliable features.
We are looking for engineers who treat the systems they build as their own: people who are comfortable owning a service end to end, from writing the code to verifying it works as intended in production and monitoring its health.&nbsp;
We are hiring for multiple Ecosystem Services Team back-end teams - each solving their own unique challenges to make the web better for everyone. More details about all hiring teams will be shared in the interviews.&nbsp;
About Ecosystem Services:
Ecosystem Services builds and operates the back-end platforms that power Mozilla products and services, with a focus on privacy, security, and delivering critical functionality to Firefox and millions of users worldwide.
Our portfolio spans a diverse set of platforms and services. Representative examples include Privacy Services, which provides the APIs and infrastructure behind Mozilla VPN, Relay (email and phone aliasing), and Monitor (data breach detection and remediation); AutoPush, Mozilla's Web Push platform for securely delivering notifications and real-time updates to Firefox clients; and Remote Settings, Mozilla's platform for delivering configuration updates to Firefox outside the regular release cycle. Together with many other backend platforms across the organization, these services help deliver secure, reliable experiences to Mozilla users every day.
Our teams own services end-to-end from designing and building distributed systems, to operating them in production, improving reliability, and evolving the cloud infrastructure they run on. We work closely with product, frontend engineering, Cloud Engineering, UX, and design partners to build resilient systems that make the web better for everyone.
We're hiring backend engineers across multiple Ecosystem Services teams, each tackling different technical challenges while sharing a culture of ownership, collaboration, and operational excellence. More details about the specific teams and domains will be shared during the interview process.
What you’ll do:&nbsp;
<ul>
<li style="font-weight: 400;">Lead backend development, building and maintaining server-side logic</li>
<li style="font-weight: 400;">Take real ownership of the services you work on: deploy them, operate them, and keep them healthy in production rather than handing them off</li>
<li style="font-weight: 400;">Work closely with our CloudEng Team to maintain and improve production environments, including monitoring and alerting with tools such as OpenTelemetry, Sentry, Prometheus, and Grafana</li>
<li style="font-weight: 400;">Participate in an on-call / off-hours support rotation, triaging and resolving production issues, partnering with CloudEng and support teams to investigate incidents, address bug reports, and keep the application running reliably</li>
<li style="font-weight: 400;">Periodically rotate into a support role, handling releases, dependency updates, and incoming work requests from customer support and other stakeholders</li>
<li style="font-weight: 400;">Thoughtfully apply AI-assisted development tools to move faster and raise quality, while maintaining good judgment about where they fit and where they don't</li>
<li style="font-weight: 400;">Partner with and support stakeholders (e.g. front-end, platform), ensuring backend systems, APIs, and data contracts meet their needs</li>
<li style="font-weight: 400;">Partner with frontend and cross-functional teams to align on project goals, contribute to API design, and ensure backend systems, APIs, and data contracts meet their needs</li>
<li style="font-weight: 400;">Participate in code reviews to maintain high standards of code quality and system reliability</li>
<li style="font-weight: 400;">Participate in security and privacy reviews, ensuring all data protection measures meet compliance standards</li>
</ul>
What you’ll bring:&nbsp;
<ul>
<li style="font-weight: 400;">4+ years of experience in software development with a strong focus on backend technologies</li>
<li style="font-weight: 400;">Strong professional experience with Python , TypeScript/Node.js, or Rust building back-end services and confidence leading back-end engineering projects.</li>
<li style="font-weight: 400;">Proficiency with PostgreSQL and SQL query optimization, including relational schema design and migrations with a query builder such as Knex</li>
<li style="font-weight: 400;">Hands-on DevOps experience on Google Cloud Platform (GCP), with Docker-based build and deploy pipelines. You are comfortable deploying, operating, and troubleshooting services in the cloud rather than handing that responsibility to someone else</li>
<li style="font-weight: 400;">Hands-on experience with observability and monitoring tooling such as Sentry and Grafana</li>
<li style="font-weight: 400;">A pragmatic commitment to shipping quality work. You care about the quality and reliability of what you ship, you make sensible trade-offs under real constraints, and you consistently move work to and into production.</li>
<li style="font-weight: 400;">Strong engineering judgment. You can navigate ambiguity, weigh trade-offs, and make sound decisions with incomplete information, and you know when to ask for input</li>
<li style="font-weight: 400;">A genuine ownership mindset. You are excited to own a service end to end and have a track record of operating what you build in production, including experience with on-call or off-hours production support</li>
<li style="font-weight: 400;">Experience mentoring junior engineers and driving technical excellence in code quality, testing, and process improvements</li>
</ul>
Bonus Points for experience with:
<ul>
<li style="font-weight: 400;">Performance / load testing&nbsp;</li>
<li style="font-weight: 400;">Experience with IaC tools such as Terraform and Kubernetes</li>
<li style="font-weight: 400;">Open-source contributions or personal engineering projects</li>
<li style="font-weight: 400;">Django experience</li>
</ul>
What you’ll get:
<ul>
<li style="font-weight: 400;">Generous performance-based bonus plans to all eligible employees - we share in our success as one team</li>
<li style="font-weight: 400;">Rich medical, dental, and vision coverage</li>
<li style="font-weight: 400;">Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)</li>
<li style="font-weight: 400;">Quarterly all-company wellness days where everyone takes a pause together</li>
<li style="font-weight: 400;">Country specific holidays plus a day off for your birthday</li>
<li style="font-weight: 400;">One-time home office stipend</li>
<li style="font-weight: 400;">Annual professional development budget</li>
<li style="font-weight: 400;">Quarterly well-being stipend</li>
<li style="font-weight: 400;">Considerable paid parental leave</li>
<li style="font-weight: 400;">Employee referral bonus program</li>
<li style="font-weight: 400;">Other benefits (life/AD&amp;D, disability, EAP, etc. - varies by country)</li>
</ul>
About Mozilla&nbsp;
Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.
Commitment to diversity, equity, inclusion, and belonging
Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission.&nbsp; We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions.
We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at <a class="external-link" href="mailto:hiringaccommodation@mozilla.com">hiringaccommodation@mozilla.com</a> to request accommodation.
We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws.&nbsp; Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.
Group: D
#LI-REMOTE
Req ID: R3234
</div>
</div><div class="content-pay-transparency"><div class="pay-input"><div class="description">Hiring Ranges:</div><div class="title">US Tier 1 Locations</div><div class="pay-range">$137,000&mdash;$183,000 USD</div></div><div class="pay-input"><div class="title">US Tier 2 Locations</div><div class="pay-range">$126,000&mdash;$168,000 USD</div></div><div class="pay-input"><div class="title">US Tier 3 Locations</div><div class="pay-range">$116,000&mdash;$155,000 USD</div></div></div>

<div class="gmail_default" style="font-size: small;">
<div>
<div>To learn the Hiring Ranges for this position, please select your location from the Apply Now dropdown menu.</div>
To learn more about our Hiring Range System, please click this <a href="https://docs.google.com/document/d/1ylUe7Ou0EbsOtGRBtUv1sSld3lbZ4mrYzo59tEkSjY8/edit?usp=sharing" target="_blank">link.</a>
Why Mozilla?
Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people.&nbsp;
The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.&nbsp;
About this team and role:
This role owns the foundation that lets other software drive Firefox: the secure, reliable connection an outside tool or another team uses to act inside the browser, and the building blocks they call to do it. It enables the teams building on it — internal teams, outside AI tools — to create their own products on top. This role owns the shared layer and the strategy for it. It’s a hands-on, technical role in a fast-moving, greenfield space, so it’s as much strategy as execution.
The opportunity is broad: internal teams (Smart Window, New Products’ automated tools), outside AI tools and their users, and web developers. The three share much of the underlying technology, but each reaches its market in a different way. The mandate is to figure out what to go after, and in what order.
What you’ll do:
<ul>
<li style="font-weight: 400;">Own the shared foundation and the building blocks it gives other software, and make them reliable and secure.</li>
<li style="font-weight: 400;">Push the open standard (WebDriver BiDi) forward, and build Firefox-only advantages the standard won’t cover&nbsp;</li>
<li style="font-weight: 400;">Design the safety controls: let a person approve actions, see when software is acting for them, and take back control.&nbsp;</li>
<li style="font-weight: 400;">Define the strategy for any major third-party AI assistants people already use.</li>
<li style="font-weight: 400;">Serve internal teams (Smart Window, New Products) and outside tools through one shared layer.&nbsp;</li>
</ul>
Measured on:
Adoption across teams and tools, volume of usage through the platform, and sustained reliability and security.
What you'll bring:
<ul>
<li style="font-weight: 400;">A product-minded engineer, or a very technical PM who can drive a technical product&nbsp;</li>
<li style="font-weight: 400;">Developer-space experience, with the range to think about consumers and internal platforms</li>
<li style="font-weight: 400;">Comfortable setting strategy in ambiguity; own a technical contract other teams depend on</li>
<li style="font-weight: 400;">Strong instincts on security and trust. Nice to have: web standards, MCP, browser automation</li>
</ul>
What you’ll get:
<ul>
<li style="font-weight: 400;">Generous performance-based bonus plans to all eligible employees - we share in our success as one team</li>
<li style="font-weight: 400;">Rich medical, dental, and vision coverage</li>
<li style="font-weight: 400;">Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)</li>
<li style="font-weight: 400;">Quarterly all-company wellness days where everyone takes a pause together</li>
<li style="font-weight: 400;">Country specific holidays plus a day off for your birthday</li>
<li style="font-weight: 400;">One-time home office stipend</li>
<li style="font-weight: 400;">Annual professional development budget</li>
<li style="font-weight: 400;">Quarterly well-being stipend</li>
<li style="font-weight: 400;">Considerable paid parental leave</li>
<li style="font-weight: 400;">Employee referral bonus program</li>
<li style="font-weight: 400;">Other benefits (life/AD&amp;D, disability, EAP, etc. - varies by country)</li>
</ul>
About Mozilla&nbsp;
Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.
Commitment to diversity, equity, inclusion, and belonging
Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission.&nbsp; We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions.
We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at <a class="external-link" href="mailto:hiringaccommodation@mozilla.com">hiringaccommodation@mozilla.com</a> to request accommodation.
We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws.&nbsp; Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.
Group: C
#LI-DNI
Req ID: R3214
</div>
</div>

Senior Staff Product Manager, Browser Control Platform

<h2>The role</h2>
You will take on the ongoing maintenance and engineering work in Firefox’s Graphics area (rendering, compositing, images, canvas, WebGL). You help keep the graphics code healthy.
<h2>Responsibilities</h2>
<ul>
<li style="font-weight: 400;">Own day-to-day Graphics maintenance: bug fixes, regressions, test upkeep, incoming issues.</li>
<li style="font-weight: 400;">Diagnose and fix graphics problems across platforms (Windows, macOS, Linux, Android).</li>
<li style="font-weight: 400;">Carry code review and routine upkeep so the FTE engineers can focus on performance.</li>
</ul>
<h2>Definition of done</h2>
A healthy Graphics area, backlog and regressions kept down, with the team’s senior engineers freed to focus on performance.
<h2>Required qualifications</h2>
<ul>
<li style="font-weight: 400;">Strong C++ and/or Rust.</li>
<li style="font-weight: 400;">Knowledge of graphics frameworks and GPU architecture.</li>
<li style="font-weight: 400;">Strong debugging and optimization in a multithreaded codebase.</li>
<li style="font-weight: 400;">Able to work independently and lead technically in a large, mature codebase.</li>
</ul>
<h2>Preferred</h2>
<ul>
<li style="font-weight: 400;">Shader languages; mobile/Android; open-source collaboration.</li>
</ul><div class="content-pay-transparency"><div class="pay-input"><div class="description">Hiring Ranges:</div><div class="title">Canada Tier 1 Locations</div><div class="pay-range">$145,800&mdash;$186,172 CAD</div></div><div class="pay-input"><div class="title">Canada Tier 2 Locations</div><div class="pay-range">$131,400&mdash;$154,600 CAD</div></div></div>

Contract Staff Software Engineer - Performance Graphics (C++,Rust, WebGL)

You will take on the ongoing maintenance and routine engineering work in Firefox’s Layout area (CSS, page layout, APZ, text, images). Working independently at a tech-lead level, you keep the Layout code healthy.
<h3>Responsibilities</h3>
<ul>
<li style="font-weight: 400;">Own day-to-day Layout maintenance: fix bugs and regressions, keep tests green, handle incoming issues.</li>
<li style="font-weight: 400;">Diagnose and fix Layout problems across platforms (Windows, macOS, Linux, Android).</li>
<li style="font-weight: 400;">Carry code review and routine upkeep so the FTE engineers can focus on other mission critical projects. .</li>
<li style="font-weight: 400;">Join planning and standards / web-compat meetings as needed.</li>
</ul>
Definition of done
A healthy Layout area, backlog and regressions kept down, with the team’s senior engineers freed to focus on critical Performance and Security issues.
Required qualifications
<ul>
<li style="font-weight: 400;">Strong C++ (JavaScript and/or Rust a plus).</li>
<li style="font-weight: 400;">Solid CSS and page-layout knowledge.</li>
<li style="font-weight: 400;">Strong debugging and optimization in a multithreaded codebase.</li>
<li style="font-weight: 400;">Able to work independently and lead technically in a large, mature codebase.</li>
</ul>
<h3>Preferred</h3>
<ul>
<li style="font-weight: 400;">Prior experience in web browser architecture and development.</li>
<li style="font-weight: 400;">Prior Web standards experience.</li>
<li style="font-weight: 400;">Mobile web development, profiling and debugging skills a plus.</li>
<li style="font-weight: 400;">Proven experience in utilization of AI tools (Claude, ChatGPT, etc.) in the investigation, development, debugging, and/or testing of code is a plus.</li>
</ul><div class="content-pay-transparency"><div class="pay-input"><div class="description">Hiring Ranges:</div><div class="title">Canada Tier 1 Locations</div><div class="pay-range">$185,045&mdash;$217,700 CAD</div></div><div class="pay-input"><div class="title">Canada Tier 2 Locations</div><div class="pay-range">$131,400&mdash;$154,600 CAD</div></div></div>

Contract Staff Software Engineer-FireFox Layout

<h2>The role</h2>
You will build and improve the WebCompat team’s internal tooling, the dashboards and the broken-site-report screenshot pipeline the team relies on to triage and prioritize site breakage. This is a focused tooling role that makes the WebCompat program faster and more data-driven.
<h2>Responsibilities</h2>
<ul>
<li style="font-weight: 400;">Build and improve WebCompat dashboards (triage, reporting, and metrics).</li>
<li style="font-weight: 400;">Improve the broken-site-report screenshot capture and pipeline.</li>
<li style="font-weight: 400;">Work with the WebCompat team (including QA) to turn reporting and triage needs into reliable tooling.</li>
</ul>
<h2>Required qualifications</h2>
<ul>
<li style="font-weight: 400;">Solid web development (JavaScript, HTML, CSS, Python &amp; Django) and experience building dashboards / data views.</li>
<li style="font-weight: 400;">Comfort with tooling, automation, and web services.</li>
<li style="font-weight: 400;">Self-directed, with good written communication.</li>
</ul>
<h2>Preferred</h2>
<ul>
<li style="font-weight: 400;">Familiarity with WebCompat workflows and Bugzilla.</li>
<li style="font-weight: 400;">Experience with screenshot / automation pipelines.</li>
<li style="font-weight: 400;">Experience with Machine Learning</li>
</ul>

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