Describe a project you are proud of

Prompt

Spend ~30 minutes walking the interviewer through a software project you are proud of.

What to cover

• Problem & context: What was the user/business need? What constraints existed (time, latency, cost, compliance, team size)?
• Your role: What you personally owned vs. what the team owned.
• Technical design: Key architecture/design choices, data model/APIs, trade-offs considered, and why you chose your approach.
• Execution: How you planned, broke down tasks, collaborated, handled uncertainty, and unblocked yourself/others.
• Challenges: Biggest technical or organizational challenge and how you resolved it.
• Results: Measurable impact (latency, reliability, cost, adoption, revenue, incidents reduced, etc.).
• Reflection: What you would improve if you had more time and what you learned.

Follow-ups to expect

• “What alternatives did you consider?”
• “What would you do differently?”
• “How did you validate correctness/quality?”
• “How did you handle edge cases or failures?”