Established in London in 2018, Fourier are a team of experienced recruiters specialising in information technology, trading technology and quant analytics. We provide contract and permanent personnel to clients including investment banks, proprietary traders, hedge funds and fintech’s.

Fourier Ltd is hiring: Junior UI Developer â- World Renowned Hedge Fund â- Urgen

C++ Developer – High-Frequency Trading Systems | New York, NY, USA | Hybrid

C++ Engineer - Low Latency - Buy Side - Immediate Hire

Elite Level UI Engineers

C++ Engineer - HFT - URGENT HIRE

Low Latency C++ Engineer - Prop Trading

Software Engineer - Remote

C++ Engineer - Build Cutting-Edge Systems

Fourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission-free future.<h2>About the Role</h2>We are looking for a Deployment Engineer to aid the successful and reliable deployment of our system on customer sites. This role will start supporting several short term pilot projects, it will then morph into a lead commissioning role for permanent system installation. Fourier engineers work in a hands-on, collaborative environment to solve problems and push progress forward. Qualified candidates should have prior hands-on experience working in an industrial setting helping to ensure customer success.<h2>Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Responsible for end-to-end operational deployment: from transit to customer site to setup and final acceptance testing</li><li>Responsible for planning and alignment with the customer on technical and implementation requirements</li><li>Ensure site conditions are feasible for system requirements and operational success</li><li>Organize, plan, and execute on site preparation</li><li>Meet and exceed customer performance and safety expectations</li><li>Design and prototype tools to help with deployment</li><li>Be able to effectively communicate and collaborate and partner with the Engineering team to collect and analyze data to improve system performance</li><li>High level of problem-solving ability to quickly debug on-site issues</li></ul><h2>Qualifications</h2>Required:<ul style="min-height:1.5em"><li>B.S. in Mechanical Engineering, Electrical Engineering, Chemical, or Equipment Engineering or equivalent</li><li>3+ years of relevant experience</li><li>Hands-on experience in deployment and/or technical program management</li><li>Great communicator and execution ability in high pressure situations</li><li>Comfort working in heavy industry sites</li><li>Willingness to frequently travel to customer sites (50%+)</li></ul>Preferred:<ul style="min-height:1.5em"><li>Advanced degree (M.S. or Ph.D) in Mechanical Engineering or relevant field</li><li>Experience in the following areas:<ul style="min-height:1.5em"><li>Hands-on work with gas and/or water piping</li><li>Analyzing energy systems</li><li>Working with hydrogen or similar gasses</li><li>Experience with troubleshooting Linux based control systems.</li></ul></li></ul><h2>What we offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>401k</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li></ul>

Field Deployment Engineer

About the companyFourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission-free future.About the roleThis internship will involve supporting the design of our commercial product. The intern will contribute to the design of a water purification system and gas/liquid phase separators for electrolysis. The intern will procure mechanical components (pumps, valves, sensors, etc.) that fulfill the provided requirements. The role may involve working with vendors to design and develop custom components.Requirements<ul style="min-height:1.5em"><li>Currently pursuing or recently completed a B.S. or M.S. in Mechanical or Chemical, Environmental Engineering, or similar. </li><li>Comfortable working with basic mechanical and/or electrical components and motivated to take ownership (agency) of hands-on lab work</li><li>Thrives in a fast-moving environment and can learn, iterate, and execute with speed (velocity)</li><li>Willing to roll up their sleeves to support testing, troubleshooting, and mechanical modifications as needed</li><li>Must be available to start in February 2026 or earlier and work on-site in Mountain View / San Francisco</li><li>Highly organized with strong attention to detail and a commitment to following through (accountability) </li><li>Clear, thoughtful communicator who works well on small, collaborative teams</li></ul>

Winter 2026 Engineering Intern

Fourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission-free future. <h2>About the Role</h2>We are seeking an experienced Process Engineer to support the successful and reliable design, integration, and deployment of our system at our customer sites. Fourier engineers work in a hands-on, collaborative environment to solve problems and push progress forward. Qualified candidates should have prior hands-on experience working in an industrial company, helping to ensure customer success.<h2>Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Responsible for the Process Design of Fourier electrolyzer stackups</li><li>Responsible for planning, integrating, and ensuring compatibility at customer sites</li><li>Ensure that the Fourier Electrolyzer meets and exceeds customer safety and performance expectations</li><li>Design and prototype tools to help with deployment</li><li>Be able to effectively communicate, collaborate, and partner with the Engineering team to collect and analyze data to improve system performance</li><li>High level of problem-solving ability to quickly debug on-site issues</li></ul><h2>Qualifications</h2>Required:<ul style="min-height:1.5em"><li>B.S. in Chemical Engineering or equivalent</li><li>8+ years of relevant experience</li><li>Hands-on work with gas and/or water piping and valve selection</li><li>Hands-on experience in the development and deployment of novel chemical systems</li><li>Solid understanding of Process Safety Management requirements (PHA; HAZOP)</li><li>Familiarity with industry standards and regulations (e.g., API, ASME, OSHA, EPA)</li><li>Great communicator and execution ability in high-pressure situations</li><li>Willingness to frequently travel to customer sites</li></ul>Preferred:<ul style="min-height:1.5em"><li>Advanced degree (M.S. or Ph.D) in Chemical Engineering or relevant field</li><li>Experience in the following areas:<ul style="min-height:1.5em"><li>Electrolyzer experience</li><li>Analyzing energy systems</li><li>Working with hydrogen or similar gases</li><li>Equipment commissioning experience at chemical facilities</li></ul></li></ul><h2>What we offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>401k</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li><li>Free lunches on-site</li></ul>

Process Engineer - India

Fourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission free future.<h2>About the Role</h2>We are looking for a Mechanical Engineer to aid in the design, assembly, testing, and optimization of our system. Fourier engineers work in a hands-on, collaborative environment to solve problems and push progress forward. Qualified candidates should have prior hands-on experience working in a mechanical lab or industrial company.<h2>Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Design and build prototypes and product encasing</li><li>Create detailed design of mechanical structures and assemblies and work with appropriate manufacturers</li><li>Facilitate selection of the optimal hardware components (sensors, pipes, valves, etc.) from external suppliers</li><li>Create and maintain Balance of Plant cost/Bill of Materials</li><li>Assess failure modes that involve thermal/structural/electrical/chemical/fluid interactions</li><li>Problem solve and risk mitigation</li><li>Oversee the assembly and setup of benchtop test rigs, prototypes, and production units</li></ul><h2>Qualifications</h2>Required:<ul style="min-height:1.5em"><li>B.S. in Mechanical Engineering or equivalent</li><li>4+ years of relevant experience</li><li>Hands-on experience assembling mechanical systems</li><li>Experience designing and building structures, from 3D CAD and/or 2D drawings through fabrication and assembly</li><li>Experience designing and developing cost-effective solutions</li></ul>Preferred:<ul style="min-height:1.5em"><li>Advanced degree (M.S. or Ph.D) in Mechanical Engineering or relevant field</li><li>Experience in the following areas:<ul style="min-height:1.5em"><li>Hands-on work with gas and/or water piping</li><li>FMEA (Failure Mode &amp; Effects Analysis)</li><li>Designing and analyzing energy systems</li><li>Working with hydrogen or similar gases</li><li>Mechatronics</li><li>Designing enclosures for electromechanical systems</li></ul></li></ul><h2>What we offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>401k</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li></ul>

Sr. Mechanical Engineer - India

<h1>About Fourier</h1>At Fourier, we're making on-site hydrogen universally accessible. Our breakthrough design enables highly modular and fully automated electrolyzer systems that scale to any size and optimize efficiency at all loads. Backed by leading venture capital firms, we're a team of passionate individuals, on a mission to transition the global energy landscape towards a sustainable and emission-free future. We're building a collaborative and innovative culture where every team member has a direct impact on our success.<h1>Position Overview</h1>Fourier seeks a VP of Hardware Engineering to lead our hardware development team that builds our electrolyzer systems. You will be responsible for the high level design and architectural directions, prototyping efforts, taking the product from design to late-stage manufacturing. Ideal candidates would have a demonstrated track record of successfully shipping industrial hardware products. You need to have a strong experience leading small teams of exceptional engineers, scaling up teams from the ground up while building a strong engineering culture. In this role you will help commercialize the product, grow a cross-functional team and play an important role in building energy resilience.<h1>Roles and Responsibilities</h1><ul style="min-height:1.5em"><li>Reporting to the CEO, the VP of hardware engineering will be a part of the core leadership defining the strategy and design directions of our product.</li><li>Oversee the hardware engineering on Fourier’s technology development teams responsible for the production devices, test stands, fabrication support, and stack hardware</li><li>Prototype, plan timelines, and rapidly iterate to move from prototype to product</li><li>Drive commercialization of our product towards successful completion of pilots and early deployments.</li><li>Build and scale a world-class engineering team and develop leaders to grow with the company.</li><li>Provide technical guidance and leadership to the engineering teams in order to maximize the pace of innovation and development</li><li>Champion new ideas, technologies and directions while steering the team towards execution.</li><li>Establish and implement the strategic direction of the company's engineering and development initiatives</li><li>Drive and build upon our strong engineering culture that focuses on agency, accountability and velocity.</li><li>Engage in continuous performance management to coach, recognize, celebrate, and inspire excellence while clearly communicating expectations and accountability.</li><li>Develop Fourier’s collaborative and people-driven culture to enable individual growth and make Fourier one the best places to work. </li></ul><h1>Must-Have Experience </h1><ul style="min-height:1.5em"><li>Team Building &amp; Leadership: Proven experience scaling and leading a high-performing hardware engineering team—from an early core group to a larger, structured organization. </li><li>End-to-End Hardware Development: Demonstrated success leading hardware programs from early-stage prototyping through to full-scale production, with an emphasis on technical execution and delivery. </li><li>Operating in Resource-Constrained Environments: Hands-on leadership experience in a startup setting without deep financial backing—where scrappiness, prioritization, and efficiency were key to success. </li><li>Deep, Non-Consumer Hardware Expertise: A strong background in complex, non-consumer hardware systems (e.g., industrial, medical devices, robotics, aerospace, automotive, etc.)—with a clear understanding of the technical and regulatory challenges involved. </li><li>Cross-Functional Collaboration: A track record of working closely with cross-disciplinary teams (product, manufacturing, executive leadership) to align hardware development with company goals and milestones. </li><li>Technical Strategy &amp; Execution: Demonstrated ability to set and execute a clear technical vision for a hardware organization, including defining engineering processes, quality standards, and scaling roadmaps.</li></ul><h1>Qualifications and Skills</h1><ul style="min-height:1.5em"><li>At least 3 years of engineering leadership experience at director level or above</li><li>Experience shipping successful products</li><li>Experience working with cross-functional teams</li><li>Experience working on agile products / with ambitious deadlines</li></ul>

VP of Engineering, Hardware

Fourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated Electrolyzers that scale to any size and optimize efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission free future. <h2>About the Role</h2>We are looking for a Mechanical Engineer to aid in thermal and fluid systems design, assembly, testing, and optimization of our system. Fourier engineers work in a hands-on, collaborative environment to solve problems and push progress forward. Qualified candidates should have prior hands-on experience working in a mechanical lab or industrial company. <h2>Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Design and validate air and liquid cooling technologies for thermal management of electrolyzer stacks and electrical components.</li><li>Optimize cooling solutions for all aspects of their performance, cost, and reliability </li><li>Review process flow diagrams, and create P&amp;IDs and mechanical design</li><li>Perform analysis to validate fluid &amp; thermal performance and safety of the designs</li><li>Facilitate selection of the optimal hardware components (heat exchanger, pump, fan, sensors, pipes, valves, fittings etc.) from external suppliers </li><li>Collaborate with power systems and product teams to aid in system integration</li><li>Assess failure modes that involve thermal/structural/electrical/chemical/fluid interactions </li><li>Develop test plans and lead thermal &amp; fluid systems lab test, and validation activities</li><li>Create and maintain Balance of Plant cost/Bill of Materials </li><li>Oversee the assembly and setup of prototypes, and production units</li></ul><h2>Qualifications</h2>Required: <ul style="min-height:1.5em"><li>B.S. in Mechanical Engineering or equivalent with 5+ years of relevant experience</li><li>First-principles physics understanding of engineering disciplines such as: heat transfer, thermodynamics, and fluid dynamics</li><li>Experience in 2D/3D CAD piping and thermal system design </li><li>Extensive experience taking designs from concept through production</li><li>Experience in DFM, DFA and cost optimization </li><li>Hands-on experience assembling mechanical components </li><li>Familiarity with mechanical and structural design </li><li>Skills: 3D CAD (Solidworks or similar), 2D Drawings, GD&amp;T</li></ul>Preferred: <ul style="min-height:1.5em"><li>Advanced degree (M.S. or Ph.D) in Mechanical Engineering or relevant field </li><li>Experience in the following areas: <ul style="min-height:1.5em"><li>Hands-on work with gas and/or water piping </li><li>FMEA (Failure Mode &amp; Effects Analysis) </li><li>Working with hydrogen or similar gasses </li><li>Thermal FEA and fluid analysis (CFD)</li><li>Packaging design for thermal and fluids systems</li></ul></li></ul><h2>What we offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>401k</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li></ul>

Sr. Mechanical Engineer, Thermal and Fluid Systems

Fourier is building the future of on-site Hydrogen. Our breakthrough architecture enables highly modular, fully automated Hydrogen systems that scale to any size and maintain optimal efficiency across all loads. Our mission is to accelerate the world’s transition to sustainable, emission-free energy.As part of our global growth, Fourier is expanding into India—establishing a key development center that will play a critical role in product engineering, prototyping, and future manufacturing. India will be central to our global supply chain and will evolve into a vital hub for innovation, deployment, and scale. With its rising demand for clean energy and growing industrial base, India also represents one of the most important long-term markets for hydrogen-based energy resilience.<h2>About the Role</h2>We’re looking for a Managing Director to lead Fourier’s India office. This is a senior leadership role reporting directly to the CEO, with significant ownership over technical direction, team building, and organizational development.You’ll work at the intersection of engineering innovation and company strategy—building a team, driving technical execution, and helping us deliver next-gen Hydrogen systems to market while working towards our long-term vision of Energy Resilience<h2>Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Build a world-class engineering organization in India from the ground up—hire top talent, establish core processes, and shape a high-performance, mission-aligned culture.</li><li>Lead Fourier India’s engineering organization and play a critical role in company-wide product strategy and execution.</li><li>Partner with the U.S. team to define and implement architectural and design directions for our electrolyzer systems.</li><li>Oversee hardware and software development including test stands, fabrication, and stack subsystems.</li><li>Work with and be a part of Fourier’s leadership team to own the product development from early prototyping through late-stage manufacturing.</li><li>Provide technical oversight and hands-on leadership to accelerate development velocity.</li><li>Manage and report on engineering budgets, timelines, and resourcing.</li><li>Support vendor and supplier management including contract negotiation and sourcing of critical components.</li><li>Actively contribute to building Fourier’s collaborative and people-first culture across India and the U.S.</li></ul><h2>Qualifications</h2><ul style="min-height:1.5em"><li>Bachelor’s or Master’s degree in Mechanical, Electrical, Computer Science or related Engineering disciplines.</li><li>Experience leading a global technical team preferably in the US-India corridor and working with global suppliers and customers</li><li>10+ years of experience leading teams, with director-level (or higher) responsibilities.</li><li>Proven success managing 15+ engineers and scaling high-performance teams from the ground up.</li><li>Deep experience in building and launching industrial-grade hardware systems.</li><li>Familiarity with mechanical, electrical, and chemical engineering problems in the energy sector.</li><li>Prior experience in manufacturing and scaling complex systems. Skilled in hiring, mentoring, and developing senior leaders and managers.</li><li>Strong command of Indian HR practices, including compensation, performance management, and employee relations.</li><li>Excellent collaboration, communication, and organizational influence—especially across geographies.</li><li>Experience in vendor management, sourcing, and contract negotiations is a plus.</li></ul><h2>What we offer</h2><ul style="min-height:1.5em"><li>Competitive salary &amp; equity</li><li>Comprehensive benefits</li><li>A collaborative and inclusive work environment</li><li>The opportunity to shape the future of clean energy and grow with a mission-driven team</li></ul>

Managing Director, Fourier India

Fourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission-free future.<h2>About the Role</h2>We are seeking a highly motivated and detail-oriented Laboratory Technician to join our lean and agile team. This is a critical hands-on role that will directly support our research and development efforts by maintaining laboratory operations, executing experiments, and ensuring the smooth flow of our research and development processes. Given our focus on hydrogen, experience with relevant processes and equipment will be highly valued. The ideal candidate thrives in a fast-paced environment, is eager to learn, and possesses a strong work ethic with a proactive approach to problem-solving.<h2>Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Laboratory Maintenance &amp; Organization:<ul style="min-height:1.5em"><li>Maintain a clean, organized, and safe laboratory environment..</li><li>Manage laboratory inventory, including ordering, receiving, stocking, and tracking of consumables, and supplies.</li></ul></li><li>Experimental Support &amp; Execution:<ul style="min-height:1.5em"><li>Assist in execution of basic experiments under the guidance of senior engineers</li><li>Operation of small-scale experimental setups for hydrogen production.</li><li>Accurately record experimental data (electronic and/or physical).</li><li>Assist in troubleshooting experimental issues and optimizing protocols.</li><li>Independently design and fabricate/build subsystems and test stands based on input from engineering.</li><li>Design, fabricate, and instrument experimental test stands and setups in collaboration with engineering.</li></ul></li><li>Quality Control &amp; Documentation:<ul style="min-height:1.5em"><li>Adhere strictly (and develop) SOPs and safety guidelines.</li><li>Contribute to the development and improvement of laboratory protocols and documentation.</li></ul></li><li>Team Collaboration &amp; Communication:<ul style="min-height:1.5em"><li>Collaborate effectively with engineers and other team members to support project goals.</li><li>Communicate experimental results, observations, and issues clearly and concisely to the team.</li><li>Actively participate in lab meetings and contribute to a positive and productive work environment.</li></ul></li></ul><h2>Qualifications</h2>Required:<ul style="min-height:1.5em"><li>Associate's or Bachelor's degree in Engineering or a related scientific field.</li><li>3+ years of hands-on experience, preferably in an industry or academic research setting. Startup experience is a plus.</li><li>Proficiency in basic design/fabrication/instrumentation techniques.</li><li>Demonstrated ability to follow protocols meticulously and maintain accurate records.</li><li>Strong organizational skills and attention to detail.</li><li>Excellent communication (written and verbal) and interpersonal skills.</li><li>Ability to work independently as well as collaboratively in a fast-paced, dynamic team environment.</li><li>Willingness to travel 25–30% within the United States, with occasional travel to India.</li></ul> <h2>What we offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>401k</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li></ul>

Laboratory Technician

Fourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission free future.<h2> Job Brief</h2>We are looking for technicians to aid in the setup of our lab space and to work with our engineering team on building and testing prototypes. Technicians will also be required to assist in lab management duties, such as purchasing and maintaining equipment. Qualified candidates should have prior hands-on experience working in mechanical, electrical, and/or chemical labs or industrial companies.<h2> Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Manage lab resources</li><li>Assist and advise on component selection from external suppliers</li><li>Order components and ensure delivery and installation of equipment</li><li>Maintain instrumentation and lab space organization</li><li>Aid engineers in prototype assembly and testing, including:<ul style="min-height:1.5em"><li>Construction of test fixtures</li><li>Electrical wiring for both low voltage and high voltage/high current circuits</li><li>Rework electronic boards</li><li>Hydrogen gas processing (piping, drying, etc.)</li><li>Water processing (pumps, filtration, etc.)</li></ul></li></ul><h2> Qualifications</h2>Required:<ul style="min-height:1.5em"><li>Excellent organizational skills and attention to detail</li><li>Effective communication skills</li><li>Capable of handling a variety of tasks and working on a team</li><li>Manual dexterity to assemble small components</li><li>Experience with electrical/mechanical assembly</li><li>Ability to perform prototype testing per written specification or verbal instruction</li><li>Experience working with piping/tubing, pumps, fittings, sensors, electronics, power supply/potentiostat, and/or electrical wiring</li></ul>Preferred:<ul style="min-height:1.5em"><li>Experience building mechanical and/or electrical lab spaces</li><li>Knowledge of deionization water filtration systems</li><li>Experience working with hydrogen gas</li><li>Ability to perform failure analyses of components</li></ul><h2>What we offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li></ul>

Lab Technician - India

Fourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated Electrolyzers that scale to any size and optimize efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission free future. <h2>About the Role</h2>We are looking for a Mechanical Engineer to aid in thermal and fluid systems design, assembly, testing, and optimization of our system. Fourier engineers work in a hands-on, collaborative environment to solve problems and push progress forward. Qualified candidates should have prior hands-on experience working in a mechanical lab or industrial company. <h2>Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Design and validate air and liquid cooling technologies for thermal management of electrolyzer stacks and electrical components.</li><li>Optimize cooling solutions for all aspects of their performance, cost, and reliability </li><li>Review process flow diagrams, and create P&amp;IDs and mechanical design</li><li>Perform analysis to validate fluid &amp; thermal performance and safety of the designs</li><li>Facilitate selection of the optimal hardware components (heat exchanger, pump, fan, sensors, pipes, valves, fittings etc.) from external suppliers </li><li>Collaborate with power systems and product teams to aid in system integration</li><li>Assess failure modes that involve thermal/structural/electrical/chemical/fluid interactions </li><li>Develop test plans and lead thermal &amp; fluid systems lab test, and validation activities</li><li>Create and maintain Balance of Plant cost/Bill of Materials </li><li>Oversee the assembly and setup of prototypes, and production units</li></ul><h2>Qualifications</h2>Required: <ul style="min-height:1.5em"><li>B.S. in Mechanical Engineering or equivalent with 5+ years of relevant experience</li><li>First-principles physics understanding of engineering disciplines such as: heat transfer, thermodynamics, and fluid dynamics</li><li>Experience in 2D/3D CAD piping and thermal system design </li><li>Extensive experience taking designs from concept through production</li><li>Experience in DFM, DFA and cost optimization </li><li>Hands-on experience assembling mechanical components </li><li>Familiarity with mechanical and structural design </li><li>Skills: 3D CAD (Solidworks or similar), 2D Drawings, GD&amp;T</li></ul>Preferred: <ul style="min-height:1.5em"><li>Advanced degree (M.S. or Ph.D) in Mechanical Engineering or relevant field </li><li>Experience in the following areas: <ul style="min-height:1.5em"><li>Hands-on work with gas and/or water piping </li><li>FMEA (Failure Mode &amp; Effects Analysis) </li><li>Working with hydroge</li></ul></li></ul>

<h3>About Fourier</h3>At Fourier, we're making on-site hydrogen universally accessible. Our breakthrough design enables highly modular and fully automated electrolyzer systems that scale to any size and optimize efficiency at all loads. Backed by leading venture capital firms, we're a team of passionate individuals on a mission to transition the global energy landscape towards a sustainable and emission-free future. We're building a collaborative and innovative culture where every team member has a direct impact on our success.<h3>About the Role</h3>We are seeking an experienced Engineering Program Manager to help lead the development of Fourier’s commercial on-site hydrogen production system. The Fourier engineering team works in a hands-on, collaborative environment to solve problems and drive progress. Qualified candidates should be comfortable partnering with engineering teams throughout the product lifecycle, from architecture to design, implementation, and validation of a complex industrial hardware product.<h3>1. Roles and Responsibilities</h3><ul style="min-height:1.5em"><li>Program Leadership: Drive end-to-end program execution from concept through launch, defining scope, timelines, deliverables, and critical milestones.</li><li>Cross-Functional Coordination: Serve as the central point of contact across hardware engineering, manufacturing, product, operations, and other teams to facilitate alignment and ensure all stakeholders are working toward shared goals and outcomes.</li><li>Risk Management: Identify potential risks, develop mitigation strategies, and facilitate resolutions to ensure program success.</li><li>Stakeholder Communication: Communicate program status, risks, and key decisions to senior leadership and stakeholders, ensuring transparency and visibility into overall program health.</li><li>Process Improvement: Continuously assess, build, and improve program management processes to enhance efficiency and effectiveness.</li></ul><h3>2. Must-Have Experience</h3><ul style="min-height:1.5em"><li>Technical Background: Strong foundation in mechanical, electrical, or chemical engineering, with the ability to understand system architectures and engineering trade-offs. Comfortable engaging deeply with engineering teams to ask the right questions and challenge assumptions.</li><li>Project Management Skills: Proven ability to manage complex projects with multiple stakeholders and tight deadlines in an early-stage start-up environment. Experience and demonstration of making informed decisions and trade-offs with incomplete or evolving data.</li><li>Problem Solving Skills: Problem-solving mindset with a bias toward action and ownership. Experience and passion to oversee a project from concept to implementation while working in ambiguous, fast-moving environments. Ability to decompose complex problems, prioritize effectively, and unblock teams.</li><li>Communication: Excellent written and verbal communication skills, capable of engaging and influencing cross-functional stakeholders across seniority levels. Skilled at facilitating discussions, resolving conflicts, and driving decisions.</li><li>Experience: 7+ years of experience leading cross-functional engineering programs, with a proven track record of delivering complex hardware products. Experience working with external partners such as contract manufacturers, suppliers, or test vendors is a strong plus.</li></ul><h3>3. Qualifications &amp; Skills</h3><ul style="min-height:1.5em"><li>Education: Bachelor’s or Master’s degree in Engineering or a related technical field.</li><li>Tools and Process: Familiarity with typical project and program management tools and deep understanding of fundamental development practices (agile, waterfall, hybrid). Experience with FMEA and safety compliance for making design decisions.</li></ul><h3>What we offer</h3><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>401k</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li><li>Free lunches on-site</li></ul>

Engineering Program Manager (EPM)

Fourier is working on making on-site Hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads. We are on a mission to transition the global energy landscape towards a purely sustainable and emission-free future.<h2>About the Role</h2>We are seeking an experienced Staff Process Engineer to support the successful and reliable design, integration, and deployment of our electrolyzer systems at customer sites. Fourier engineers work in a hands-on, collaborative environment to solve problems and push progress forward. Qualified candidates should have prior hands-on experience working in an industrial setting, ensuring customer success from design through commissioning.<h2>Roles and Responsibilities</h2><ul style="min-height:1.5em"><li>Lead and optimize the process design of Fourier proprietary Electrolyzer Equipment stack ups and supporting systems. </li><li>Design and prototype tools to aid system deployment and commissioning. Plan, integrate, and ensure system compatibility and start up at customer sites.</li><li>Ensure that the Fourier Electrolyzer Equipment and processes meet and exceed customer and regulatory safety requirements and performance expectations.</li><li>Collect and analyze process field data in partnership with the Software &amp; Controls and Engineering team to identify trends, intercept process issues and improve system performance. </li><li>Lead and rapidly troubleshoot engineering projects and resolve on-site issues with a high level of cross functional, problem-solving capability.</li><li>Coordinate and oversee third-party certifications (e.g., UL, TÜV SÜD) for hydrogen systems, including preparation of documentation, test plans, and engagement with certifying bodies. </li></ul><h2>Qualifications</h2>Required<ul style="min-height:1.5em"><li>B.S. in Chemical Engineering or equivalent.</li><li>10+ years of relevant experience in process engineering or system integration.</li><li>Hands-on work with gas and/or water piping, valve selection, and fluid handling systems.</li><li>Experience in the development and deployment of novel chemical or electrochemical systems.</li><li>Solid understanding of Process Safety Management requirements (PHA, HAZID, HAZOP).</li><li>Familiarity with industry standards and regulations (e.g., API, ASME, OSHA, EPA, NFPA).</li><li>Excellent communication skills and ability to execute under high-pressure situations.</li><li>Willingness to frequently travel to customer sites.</li><li>Experience with or willingness to manage product certification processes (UL, TÜV SÜD, or similar) for hydrogen equipment.</li></ul><h2>What we offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>401k</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li></ul>

Staff Process Engineer – Electrolyzer Systems

<h3>About Fourier</h3>At Fourier, we’re making on-site hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzer systems that scale efficiently across a wide range of operating conditions. Backed by leading venture investors, we’re building real hardware to accelerate the transition to a clean energy future.<h3>About the Role</h3>We’re looking for a Manufacturing Engineer to help take our electrolyzer systems from prototype to scalable production. This role sits at the intersection of design, supply chain, and the factory floor. You’ll own manufacturing processes end-to-end—driving build quality, repeatability, cost reduction, and throughput as we scale. You will have the chance to bring up an electrolyzer system assembly line from scratch and shape how manufacturing at Fourier will transform.This is a hands-on role working directly with hardware, technicians, and cross-functional engineering teams.<h3>What You’ll Do</h3><ul style="min-height:1.5em"><li>Develop, document, and optimize manufacturing and assembly processes for electro/mechanical/fluidic systems </li><li>Own manufacturing process flows, work instructions, tool selection, BOMs, and build documentation </li><li>Support prototype builds, pilot production, and transition to low- and mid-volume manufacturing </li><li>Identify and resolve manufacturing issues related to yield, quality, cost, and reliability </li><li>Collaborate with design engineers to influence DFM/DFA early in the design cycle </li><li>Work closely with supply chain and vendors to qualify parts, tools, inventory, and processes </li><li>Design or specify fixtures, tooling, and test setups to support production and validation </li><li>Support root cause analysis and corrective actions for build or field issues </li><li>Help define manufacturing KPIs and continuous improvement initiatives </li></ul><h3>What We’re Looking For</h3><ul style="min-height:1.5em"><li>BS in Mechanical, Manufacturing, Industrial Engineering, or equivalent practical experience </li><li>3+ years of experience in a manufacturing, production, or process engineering role </li><li>Strong understanding of mechanical assemblies, tolerance stack-ups, and production workflows </li><li>Experience supporting hardware builds from prototype through production </li><li>Comfortable working hands-on in a lab or factory environment </li><li>Ability to troubleshoot and solve problems at the system and component level </li><li>Clear communicator who works well across engineering, operations, and supply chain </li></ul><h3>Nice to Have</h3><ul style="min-height:1.5em"><li>Experience with complex electro-mechanical or fluid systems </li><li>Background in clean tech, energy, aerospace, automotive, or industrial equipment </li><li>Familiarity with Lean manufacturing, PFMEA, 5S, or continuous improvement methodologies </li><li>Experience scaling manufacturing in an early-stage or fast-growing company </li></ul><h3>Why Join Fourier</h3><ul style="min-height:1.5em"><li>Mission-driven clean energy work with real-world impact </li><li>High ownership and visibility — your work directly shapes the product </li><li>Opportunity to grow into technical leadership or operations roles </li><li>Collaborative, hands-on engineering culture </li></ul><h3>What We Offer</h3><ul style="min-height:1.5em"><li>Competitive salary and equity commensurate with experience </li><li>Fully paid Medical, Dental, and Vision coverage </li><li>401(k) </li><li>Paid vacation and sick leave </li><li>Free lunches on-site</li></ul>

Manufacturing Engineer

<h3>Fourier Earth is seeking a detail-oriented part-time contractor to support the sourcing and procurement of critical mechanical parts and supplies for our hydrogen systems. This role will work closely with manufacturing, engineering, and operations to ensure the timely, cost-effective delivery of components needed for development and deployment.</h3>Responsibilities<ul style="min-height:1.5em"><li>Source and order critical mechanical parts, materials, and supplies </li><li>Identify, evaluate, and coordinate with vendors and suppliers </li><li>Track orders, lead times, and delivery schedules </li><li>Monitor and track procurement budgets and cost targets </li><li>Maintain clear purchasing documentation and records </li><li>Communicate proactively with internal teams and external vendors </li><li>Assist with inventory management </li></ul>Qualifications<ul style="min-height:1.5em"><li>Strong understanding of mechanical components, materials, and assemblies, with the ability to identify and source appropriate parts </li><li>Strong organizational and vendor coordination skills </li><li>Comfortable managing multiple orders and priorities in a part-time capacity </li><li>Clear, professional written and verbal communication </li><li>Familiarity with engineering workflows and hardware development environments is a plus </li></ul>Details<ul style="min-height:1.5em"><li>Part-time contract role </li><li>Flexible hours </li><li>Duration: TBD (project-based or ongoing support)</li></ul>

Part-Time Contractor – Mechanical Parts & Supply Chain Support

<h2>About Fourier</h2>Fourier is focused on making on-site hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads.We are on a mission to transition the global energy landscape toward a purely sustainable and emission-free future by unlocking the full potential of hydrogen as a clean energy carrier.<h1>Role Overview</h1>Fourier Earth Inc. is seeking a Senior Manager of Power Electronics Engineering to lead the development of critical power electronics systems for our next-generation electrolyzer platforms. This role will combine deep technical expertise with strong leadership, guiding architecture decisions, driving hardware development, and building a high-performing engineering team.You will play a key role in developing high-efficiency power conversion systems that enable scalable hydrogen production and ensure our technology performs reliably across a wide range of operating conditions. You will lead the design, integration, and deployment of all electrical systems powering our H2 electrolyzers and all supporting equipment for a fully functional and automated hydrogen production system. The candidate will possess deep technical expertise in power conversion and industrial distribution, but have the broad systems-level vision to seamlessly integrate the hardware with mechanical constraints and software/firmware controls in a hazardous environment.The ideal candidate brings extensive experience in power electronics design, high-power systems, and system-level architecture in accordance with compliance standards, along with a proven ability to mentor engineers and lead complex hardware programs from concept through production.<h1>Responsibilities</h1><ul style="min-height:1.5em"><li>Architectural Leadership: Own the end-to-end electrical architecture from the 480V grid tie-in down to the 12V/24V DC sensor networks, ensuring clean power distribution, signal integrity, and EMI/EMC compliance.</li><li>Power Conversion &amp; Load Management: Oversee the design and specification of AC/DC rectification for the electrolyzer stack, DC/DC converters, and the integration of VFDs and SCR controllers for heavy industrial loads.</li><li>Systems Integration: Act as the technical bridge between Hardware, Controls, and Software teams. Define firmware requirements, state-machine logic, and communication protocols (Modbus, CAN, Profinet, etc.) to ensure seamless system operation.</li><li>Safety &amp; Compliance: Lead the design of electrical systems for hazardous environments (Class I, Div 1/2 or ATEX). Ensure all designs strictly adhere to NEC, UL, and relevant functional safety standards (IEC 61508/ISO 13849).</li><li>Team Management: Recruit, mentor, and manage a high-performing team of power electronics, electrical, and controls engineers.</li><li>Vendor &amp; Supply Chain Collaboration: Identify, evaluate, and manage external suppliers, component vendors, and contract manufacturers for critical power components (transformers, rectifiers, control panels).</li><li>Project Execution: Manage complex development schedules, budgets, and hardware development lifecycles from initial prototyping through to commercial-scale deployment. This includes best practices for schematic design, PCB layout, simulation and hardware validation to be presented and approved through design reviews.</li></ul><h2>Basic Qualifications</h2><ul style="min-height:1.5em"><li>Education: B.S. in Electrical Engineering or related field.</li><li>Experience: 12+ years of progressive engineering experience in power electronics, industrial automation, or renewable energy systems.</li><li>Leadership: 5+ years of direct engineering management experience leading cross-functional hardware/systems teams.</li><li>Technical Mastery: Proven expertise in 480V (3-phase) AC power distribution, AC/DC rectification, and isolating low-voltage instrumentation networks from high-voltage noise. Strong demonstration of root cause analysis and system optimization for high velocity design and implementation.</li><li>Controls &amp; Comms: Strong familiarity with PLC/PAC architectures and industrial fieldbus networks.</li><li>Safety Standards: Deep working knowledge of NEC (NFPA 70), UL 508A, and high-voltage safety protocols (LOTO, grounding/bonding).</li></ul><h2>Preferred Qualifications</h2><ul style="min-height:1.5em"><li>M.S. or Ph.D. with a focus on Power Electronics, Power Systems, or Control Systems.</li><li>Direct industry experience in hydrogen infrastructure, electrochemistry, oil &amp; gas, or large-scale energy storage.</li><li>Experience designing systems specifically for hazardous locations (hydrogen gas environments).</li><li>Strong background in thermal management of high-power electronics (liquid/air cooling strategies).</li></ul><ul style="min-height:1.5em"><li>Experience supporting manufacturing scale-up and production environments. This may include startup or high-growth technology company experience.</li></ul><h1>Why Join Fourier</h1><ul style="min-height:1.5em"><li>Help build technology that directly accelerates the clean energy transition.</li><li>Work on cutting-edge hydrogen production systems.</li><li>Join a mission-driven team solving one of the most important challenges in global energy.</li></ul>

Director/Senior Manager, Electronics Engineering

<h2>About Fourier</h2>Fourier is focused on making on-site hydrogen universally accessible. Our breakthrough architecture enables highly modular and fully automated electrolyzers that scale to any size and optimize efficiency at all loads.We are on a mission to transition the global energy landscape toward a purely sustainable and emission-free future by unlocking the full potential of hydrogen as a clean energy carrier.<div style="min-height:1.2em;margin-top:0;margin-bottom:0"> </div><h1>Role Overview</h1>Fourier Earth Inc. is seeking a Senior Manager of Power Electronics Engineering to lead the development of critical power electronics systems for our next-generation electrolyzer platforms. This role will combine deep technical expertise with strong leadership, guiding architecture decisions, driving hardware development, and building a high-performing engineering team.You will play a key role in developing high-efficiency power conversion systems that enable scalable hydrogen production and ensure our technology performs reliably across a wide range of operating conditions. You will lead the design, integration, and deployment of all electrical systems powering our H2 electrolyzers and all supporting equipment for a fully functional and automated hydrogen production system. The candidate will possess deep technical expertise in power conversion and industrial distribution, but have the broad systems-level vision to seamlessly integrate the hardware with mechanical constraints and software/firmware controls in a hazardous environment.The ideal candidate brings extensive experience in power electronics design, high-power systems, and system-level architecture in accordance with compliance standards, along with a proven ability to mentor engineers and lead complex hardware programs from concept through production.<h1>Responsibilities</h1><ul style="min-height:1.5em"><li>Architectural Leadership: Own the end-to-end electrical architecture from the 480V grid tie-in down to the 12V/24V DC sensor networks, ensuring clean power distribution, signal integrity, and EMI/EMC compliance.</li><li>Power Conversion &amp; Load Management: Oversee the design and specification of AC/DC rectification for the electrolyzer stack, DC/DC converters, and the integration of VFDs and SCR controllers for heavy industrial loads.</li><li>Systems Integration: Act as the technical bridge between Hardware, Controls, and Software teams. Define firmware requirements, state-machine logic, and communication protocols (Modbus, CAN, Profinet, etc.) to ensure seamless system operation.</li><li>Safety &amp; Compliance: Lead the design of electrical systems for hazardous environments (Class I, Div 1/2 or ATEX). Ensure all designs strictly adhere to NEC, UL, and relevant functional safety standards (IEC 61508/ISO 13849).</li><li>Team Management: Recruit, mentor, and manage a high-performing team of power electronics, electrical, and controls engineers.</li><li>Vendor &amp; Supply Chain Collaboration: Identify, evaluate, and manage external suppliers, component vendors, and contract manufacturers for critical power components (transformers, rectifiers, control panels).</li><li>Project Execution: Manage complex development schedules, budgets, and hardware development lifecycles from initial prototyping through to commercial-scale deployment. This includes best practices for schematic design, PCB layout, simulation and hardware validation to be presented and approved through design reviews.</li></ul><h2>Basic Qualifications</h2><ul style="min-height:1.5em"><li>Education: B.S. in Electrical Engineering or related field.</li><li>Experience: 12+ years of progressive engineering experience in power electronics, industrial automation, or renewable energy systems.</li><li>Leadership: 5+ years of direct engineering management experience leading cross-functional hardware/systems teams.</li><li>Technical Mastery: Proven expertise in 480V (3-phase) AC power distribution, AC/DC rectification, and isolating low-voltage instrumentation networks from high-voltage noise. Strong demonstration of root cause analysis and system optimization for high velocity design and implementation.</li><li>Controls &amp; Comms: Strong familiarity with PLC/PAC architectures and industrial fieldbus networks.</li><li>Safety Standards: Deep working knowledge of NEC (NFPA 70), UL 508A, and high-voltage safety protocols (LOTO, grounding/bonding).</li></ul><h2>Preferred Qualifications</h2><ul style="min-height:1.5em"><li>M.S. or Ph.D. with a focus on Power Electronics, Power Systems, or Control Systems.</li><li>Direct industry experience in hydrogen infrastructure, electrochemistry, oil &amp; gas, or large-scale energy storage.</li><li>Experience designing systems specifically for hazardous locations (hydrogen gas environments).</li><li>Strong background in thermal management of high-power electronics (liquid/air cooling strategies).</li></ul><ul style="min-height:1.5em"><li>Experience supporting manufacturing scale-up and production environments. This may include startup or high-growth technology company experience.</li></ul><h1>Why Join Fourier</h1><ul style="min-height:1.5em"><li>Help build technology that directly accelerates the clean energy transition.</li><li>Work on cutting-edge hydrogen production systems.</li><li>Join a mission-driven team solving one of the most important challenges in global energy.</li></ul>

Director/Senior Manager, Electronics Engineering - India

Fourier is on a mission to make on-site hydrogen universally accessible. Our breakthrough architecture delivers highly modular, fully automated electrolyzer systems that scale to any capacity and optimize efficiency across all load profiles. We are building the infrastructure necessary for a purely sustainable, emission-free global energy future — and we need exceptional engineers to help us get there.<h2>About the Role</h2>We are seeking a Senior Mechanical Engineer with deep hands-on expertise to lead mechanical design, analysis, integration, and validation of our commercial hydrogen production systems. This is a high-ownership role spanning all subunits and design aspects and the full balance-of-plant envelope that ties them together.This role sits at the intersection of mechanical, electrical, and manufacturing disciplines. You will co-own DFM/DFA strategy with our manufacturing partners and serve as the primary mechanical interface to our electrical and electronics engineering teams — ensuring that both high-voltage (HV) power conversion systems and low-voltage (LV) control and sensing electronics are packaged safely, thermally managed, and fully integrated into production enclosures. <h2>Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Lead concept development, design trades, and down-select decisions for all mechanical subsystems from water purification through post-production H₂ purification</li><li>Own 3D CAD design of complex parts and assemblies using SolidWorks or equivalent — including sheet metal, plastics, insulation systems, sealing methods, connectors, and fasteners</li><li>Review and develop process flow diagrams, P&amp;IDs, and mechanical design documentation</li><li>Perform first-principles hand calculations for sizing and performance of fluid, thermal, and structural systems</li><li>Collaborate closely with the electrical and electronics engineering teams to integrate high-voltage (HV) power electronics and low-voltage (LV) control, sensing, and communications systems into mechanical enclosures</li><li>Design packaging solutions for HV electrical assemblies — including bus bars, power modules, and high-current connectors — ensuring proper insulation, creepage/clearance compliance, and thermal management</li><li>Design and validate cooling technologies (heat exchangers, forced-air systems) for thermal management of electrolyzer stacks, power electronics, and ancillary electrical components</li><li>Ensure enclosure designs meet relevant electrical safety standards (UL, IEC, NFPA) for HV systems handling DC bus voltages typical of PEM electrolysis applications</li><li>Define and manage interface control documents (ICDs) between mechanical and electrical subsystems</li><li>Partner actively with manufacturing engineering to embed Design for Manufacturability (DFM) and Design for Assembly (DFA) principles from the earliest concept phase through production release</li><li>Create and maintain full Balance-of-Plant (BoP) documentation including Bills of Materials, P&amp;IDs, and fluid system specifications</li><li>Hands-on experience or strong familiarity with gas (hydrogen, nitrogen, oxygen) and water piping systems, including pressure ratings, material compatibility, and leak testing protocols</li><li>Develop test plans and lead laboratory test and validation activities to confirm product reliability, safety, and performance</li><li>Create and maintain PLM documentation including Bills of Materials, engineering drawings, design calculations, and FMEAs</li></ul><h2>Qualifications</h2>Required:<ul style="min-height:1.5em"><li>B.S. in Mechanical Engineering or equivalent; 6+ years of relevant experience in commercial product design and development</li><li>First-principles understanding of statics, mechanics, materials science, heat transfer, thermodynamics, and fluid dynamics — with the ability to apply these rapidly in hand calculations</li><li>Extensive experience taking mechanical designs from concept through production, including prototype builds and manufacturing release</li><li>Proven experience in DFM/DFA — working hand-in-hand with manufacturing partners to optimize designs for producibility, assembly, and reliability</li><li>Demonstrated experience packaging and integrating electromechanical systems involving both HV and LV electrical components</li><li>Proficiency in 3D CAD (SolidWorks strongly preferred) and Thermal &amp; Structural FEA tools</li><li>Strong hands-on aptitude — comfortable in the lab, on the shop floor, and at the test rig</li><li>Experience creating GD&amp;T-compliant 2D fabrication drawings (ASME Y14.5)</li></ul>Preferred:<ul style="min-height:1.5em"><li>Advanced degree (M.S. or Ph.D.) in Mechanical Engineering or closely related field</li><li>Experience with PEM electrolysis, fuel cell systems, or related electrochemical systems</li><li>Hands-on experience with hydrogen, oxygen, nitrogen, or other high-purity gas systems — including pressure management, material selection (316L SS, PTFE, PEEK), and leak testing</li><li>Experience with water purification technologies (deionization, ultrafiltration, reverse osmosis) and post-production gas purification</li><li>Multi-physics and CFD simulation experience (ANSYS Fluent, COMSOL, or similar)</li><li>Familiarity with electrical safety standards relevant to HV systems: UL 508A (industrial control panels), IEC 60204, NFPA 70E</li><li>Experience with PLM systems for BOM and drawing management</li></ul><h2>What we offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>401k Retirement Plan</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li><li>In-office lunches</li><li>The opportunity to make a material impact on the global clean energy transition</li></ul>

Sr. Mechanical Engineer

<h1>Sr. Mechanical Engineer</h1>Fourier is on a mission to make on-site hydrogen universally accessible. Our breakthrough architecture delivers highly modular, fully automated electrolyzer systems that scale to any capacity and optimize efficiency across all load profiles. We are building the infrastructure necessary for a purely sustainable, emission-free global energy future — and we need exceptional engineers to help us get there.<h2>About the Role</h2>We are seeking a Senior Mechanical Engineer with deep hands-on expertise to lead mechanical design, analysis, integration, and validation of our commercial hydrogen production systems. This is a high-ownership role spanning all subunits and design aspects and the full balance-of-plant envelope that ties them together.This role sits at the intersection of mechanical, electrical, and manufacturing disciplines. You will co-own DFM/DFA strategy with our manufacturing partners and serve as the primary mechanical interface to our electrical and electronics engineering teams — ensuring that both high-voltage (HV) power conversion systems and low-voltage (LV) control and sensing electronics are packaged safely, thermally managed, and fully integrated into production enclosures. <h2>Roles and responsibilities</h2><ul style="min-height:1.5em"><li>Lead concept development, design trades, and down-select decisions for all mechanical subsystems from water purification through post-production H₂ purification</li><li>Own 3D CAD design of complex parts and assemblies using SolidWorks or equivalent — including sheet metal, plastics, insulation systems, sealing methods, connectors, and fasteners</li><li>Review and develop process flow diagrams, P&amp;IDs, and mechanical design documentation</li><li>Perform first-principles hand calculations for sizing and performance of fluid, thermal, and structural systems</li><li>Collaborate closely with the electrical and electronics engineering teams to integrate high-voltage (HV) power electronics and low-voltage (LV) control, sensing, and communications systems into mechanical enclosures</li><li>Design packaging solutions for HV electrical assemblies — including bus bars, power modules, and high-current connectors — ensuring proper insulation, creepage/clearance compliance, and thermal management</li><li>Design and validate cooling technologies (heat exchangers, forced-air systems) for thermal management of electrolyzer stacks, power electronics, and ancillary electrical components</li><li>Ensure enclosure designs meet relevant electrical safety standards (UL, IEC, NFPA) for HV systems handling DC bus voltages typical of PEM electrolysis applications</li><li>Define and manage interface control documents (ICDs) between mechanical and electrical subsystems</li><li>Partner actively with manufacturing engineering to embed Design for Manufacturability (DFM) and Design for Assembly (DFA) principles from the earliest concept phase through production release</li><li>Create and maintain full Balance-of-Plant (BoP) documentation including Bills of Materials, P&amp;IDs, and fluid system specifications</li><li>Hands-on experience or strong familiarity with gas (hydrogen, nitrogen, oxygen) and water piping systems, including pressure ratings, material compatibility, and leak testing protocols</li><li>Develop test plans and lead laboratory test and validation activities to confirm product reliability, safety, and performance</li><li>Create and maintain PLM documentation including Bills of Materials, engineering drawings, design calculations, and FMEAs</li></ul><h2>Qualifications</h2>Required:<ul style="min-height:1.5em"><li>B.S. in Mechanical Engineering or equivalent; 6+ years of relevant experience in commercial product design and development</li><li>First-principles understanding of statics, mechanics, materials science, heat transfer, thermodynamics, and fluid dynamics — with the ability to apply these rapidly in hand calculations</li><li>Extensive experience taking mechanical designs from concept through production, including prototype builds and manufacturing release</li><li>Proven experience in DFM/DFA — working hand-in-hand with manufacturing partners to optimize designs for producibility, assembly, and reliability</li><li>Demonstrated experience packaging and integrating electromechanical systems involving both HV and LV electrical components</li><li>Proficiency in 3D CAD (SolidWorks strongly preferred) and Thermal &amp; Structural FEA tools</li><li>Strong hands-on aptitude — comfortable in the lab, on the shop floor, and at the test rig</li><li>Experience creating GD&amp;T-compliant 2D fabrication drawings (ASME Y14.5)</li></ul>Preferred:<ul style="min-height:1.5em"><li>Advanced degree (M.S. or Ph.D.) in Mechanical Engineering or closely related field</li><li>Experience with PEM electrolysis, fuel cell systems, or related electrochemical systems</li><li>Hands-on experience with hydrogen, oxygen, nitrogen, or other high-purity gas systems — including pressure management, material selection (316L SS, PTFE, PEEK), and leak testing</li><li>Experience with water purification technologies (deionization, ultrafiltration, reverse osmosis) and post-production gas purification</li><li>Multi-physics and CFD simulation experience (ANSYS Fluent, COMSOL, or similar)</li><li>Familiarity with electrical safety standards relevant to HV systems: UL 508A (industrial control panels), IEC 60204, NFPA 70E</li><li>Experience with PLM systems for BOM and drawing management</li></ul><h2>What we offer</h2><ul style="min-height:1.5em"><li>Fully paid Medical, Dental, and Vision coverage</li><li>Competitive salary and equity compensation commensurate with experience</li><li>Diverse and inclusive work environment</li><li>Paid sick days and vacation</li><li>In-office lunches</li><li>The opportunity to make a material impact on the global clean energy transition</li></ul>

Low Latency C++ Engineer - Prop Trading

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