Walk Through a Significant Project
Provide a deep-dive on one impactful project you led or contributed to. Cover:
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Timeline: Start/end dates and major milestones.
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Scope and Objectives: What problem you solved and success criteria.
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Your Responsibilities: What you personally owned vs. supported.
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Team Composition: Who was on the team and who did what.
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Key Technical Decisions: Alternatives considered, trade-offs, and why you chose your path.
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Risks and Mitigations: What could go wrong and how you de-risked.
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Measurable Outcomes: Metrics (e.g., latency, availability, cost), business impact (e.g., conversion, revenue).
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Post-Launch Learnings: What you learned, what you’d change, next steps.
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Be ready to deep-dive: Design docs, PRs, experiments, data, and rollbacks.
Assume the interviewer will probe on edge cases, trade-offs, and how you validated impact.