Software Engineer
- Built the merchant settlement service in Node.js and PostgreSQL, processing 40k+ transactions a day with zero reconciliation errors
- Cut average API response time from 900 ms to 180 ms by adding Redis caching and fixing N+1 queries
- Reduced AWS spend by 31% by moving batch jobs to scheduled Lambda functions
- Review pull requests for a team of 6 and wrote the team's testing guidelines (Jest, Supertest)