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IntermediateBEHAVIORAL
Tell me about a time you were responsible for delivering a complex feature end-to-end (from requirements to deployment). How did you plan the work, manage technical risks, and ensure it was delivered on time and with quality?
Software Engineer
General

Sample Answer

At my last company, I owned an end-to-end rollout of a “team workspaces” feature for about 500k active users. Product gave us a high-level PRD, but the edge cases were fuzzy, so I started with a short discovery phase: I ran a 60‑minute workshop with PM, design, support, and two power users to clarify sharing rules, permissions, and migration from existing projects. I broke the work into a thin vertical slice first: basic workspace creation, membership, and listing, behind a feature flag. I mapped dependencies in a simple RFC (data model changes, new APIs, background migration plan) and identified the main risks: a large schema change and potential performance hits on our projects table. To reduce blast radius, I added a background migration with batch limits, query indexes, and per‑tenant rollout. We shipped in three increments over six weeks, stayed within our original timeline, and saw less than 0.2% error rate at launch. Support tickets related to permissions dropped by ~35% within a month.

Keywords

Ran cross-functional discovery to clarify ambiguous requirementsPlanned thin vertical slices and documented dependencies in an RFCIdentified and mitigated data migration and performance risksUsed feature flags and staged rollout to ensure a low-issue launch
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