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IntermediateLEADERSHIP
Describe a situation where you informally or formally led a small engineering effort (e.g., a major refactor, migration, or new module) across the stack. How did you set the technical strategy, align the team and stakeholders, and ensure the work was executed successfully?
Full Stack Developer
General

Sample Answer

At my last company I led a 3-person effort to break a monolithic order-management feature into a set of services and a cleaner frontend module. The existing flow was ~6,000 lines of tangled Rails and jQuery, and any change risked outages for ~20k daily orders. I started by mapping the end-to-end flow and quantifying pain: deployments required 45 minutes of manual QA and we had a change-related incident almost every sprint. I proposed a phased strategy: first introduce API boundaries and contract tests, then modernize the React frontend against those APIs, and finally deprecate the legacy code. I ran short design reviews with backend, frontend, and QA to settle on API shapes and rollout plans, and aligned product by showing a two-release roadmap with clear risk gates. We shipped in three increments over six weeks, cut regression bugs by ~60%, and reduced deploy QA time from 45 to about 10 minutes.

Keywords

Led a cross-stack refactor of a risky, high-impact moduleDefined a phased technical strategy with clear boundaries and contractsAligned engineers, QA, and product with lightweight design reviews and a roadmapMeasured impact via reduction in bugs and deployment overhead
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