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Changhee Lee
Mid-level Software Engineer and Product Manager specializing in AI and financial data platforms
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About
Full-stack engineer with deep Next.js App Router + TypeScript experience who has shipped and owned production features in a fashion/wardrobe/resale domain. Demonstrated measurable impact across the stack: +25% engagement, 30% faster load times, 40% fewer errors, plus durable Temporal workflows and Postgres analytics/query tuning for real-time dashboards.
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Key Strengths
- Shipped and owned full-stack Next.js App Router feature end-to-end (design → deployment → post-launch iteration)
- Improved user engagement by 25% via personalized wardrobe dashboard
- Reduced production errors by 40% through robust validation, fallbacks, and monitoring
- Solved latency at scale with Redis server-side caching and batched API updates
- Frontend performance optimization using virtualization, memoization, and Suspense streaming (30% load-time decrease)
- Strong Postgres analytics design and query optimization (3–4x faster via EXPLAIN ANALYZE)
- Built durable Temporal workflows with retries, idempotency, and correctness via history replay
- Pragmatic engineering tradeoffs: shipped scoped v1 with extension points to avoid over-engineering
- Production-quality practices: layered testing strategy plus structured logs/metrics/alerts
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