•Cut checkout latency 40% (900ms to 540ms p95) by moving pricing lookups into a Redis read-through cache.

•Led a team of 4 to ship a self-serve billing portal used by 10k+ customers in its first month.

•Write each bullet as: accomplished [X], measured by [Y], by doing [Z].

•Built a React/TypeScript component library reused across 12 internal apps.

•Added end-to-end tests to the release pipeline, dropping production rollbacks from 6 to 1 per quarter.

•Shipped an internal analytics dashboard in Next.js and Recharts used by the ops team daily.