Project Deep-Dive (Technical Screen: Behavioral & Leadership)
Context
You will be asked to walk through a recent project you owned end-to-end. Assume the interviewer is a software engineer who values clarity, impact, and trade-off reasoning. You may anonymize sensitive details. Aim for a crisp 5–7 minute walkthrough followed by Q&A.
Prompt
Deep-dive one recent project. Cover:
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Problem, goals, and constraints
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What was broken or missing? Why now? Who was affected?
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Functional goals and non-functional goals (scale, latency, availability, cost, compliance).
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Explicit constraints (legacy systems, team size, timeline, budget, tech choices).
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Your specific responsibilities and decisions
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What you owned vs. what others owned.
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Key decisions you made and why.
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Architecture and key components
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High-level diagram verbally: data flow, storage, interfaces, dependencies.
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Key APIs, schemas, and critical paths.
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Major trade-offs and alternatives considered
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Options you evaluated, decision criteria, and why you chose the final approach.
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Timeline and risks
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Phases/milestones, estimates vs. actuals.
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Top risks and mitigations (rollbacks, canaries, feature flags).
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Metrics for success and actual results
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How you measured success (latency, throughput, error rate, cost, business impact).
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Before/after numbers and validation method.
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Postmortem lessons and what you'd change
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What went well, what didn’t, and concrete changes you’d make next time.
Tip: Lead with a 30–60 second executive summary (problem → approach → impact), then dive into details.