Questions that have appeared at Visa for an engineering (Case Study) interview.

1. System Design

Question: How would you design a payment system that needs to handle millions of transactions per minute?

Question: If you were to design a global payment gateway, what factors would you consider to ensure its scalability and security?

2. Project Management

Question: Describe a project you've led where you faced unforeseen challenges. How did you handle it?

Question: Could you explain a project you’ve worked on in the past and the approach you took from its inception to implementation?

3. Problem Solving

Question: Imagine a scenario where a payment fails to go through on our platform. How would you diagnose and resolve the issue?

Question: How would you handle a situation where two major systems in a project are not integrating as they should?

4. Data Security

Question: In your opinion, what are the most significant security concerns for a digital payments company like Visa and how would you address these in your role?

Question: Discuss a time when you identified and mitigated a potential security risk in a project.

5. Performance Optimization

Question: How would you approach optimizing the performance of a high-traffic application?

Question: Can you discuss a time when you had to improve the efficiency of a system or process in a previous role?

6. Teamwork and Collaboration

Question: How would you handle a situation where there is a disagreement within your team about the direction of a project?

Question: Can you describe a time when you had to collaborate with a team to achieve a project goal?

7. Innovation

Question: What is the most innovative engineering solution you've designed or contributed to, and why do you consider it innovative?

Question: How do you stay up-to-date with the latest technology trends and how have you incorporated a recent trend into your work?

8. Customer Focus

Question: How would you ensure that the solutions you develop align with the needs of our customers?

Question: Can you describe a time when you had to modify a project based on customer feedback or business requirements?

9. Risk Management

Question: In your opinion, what are the most significant risks in developing a new payment system, and how would you mitigate these risks?

Question: Can you give an example of a time when you had to make a critical decision under pressure to prevent a potential project risk?

10. Quality Assurance

Question: How do you ensure the quality of your work, especially when you are working on a tight deadline?

Question: Can you describe a time when you identified a major defect during testing? How did you handle it?