- Upgraded core order tracking pages from React 15 class components to React 18 functional components. Optimized to reduce bundle size by 40%, maintaining stability without introducing major bugs for millions of online users.
- Developed the client-facing dashboard with Next.js, OAuth2, and built its scheduling e2e monitoring with Cypress.
- Built internal automation tools to improve everyday productivity for CSE, QA and engineers.
- Enhanced backend architecture such as general logging, WSGI, timeout mechanism. Implemented RESTful CRUD APIs using Python AioHttp, Swagger, ORM.