Yash Gajera

Engineered a multi-tenant retail checkout flow using React.js, Redux Toolkit, and FastAPI, securely processing 5,000+ daily transactions across 3 regional client portals. Implemented RBAC and stateless authentication by building a Node.js API gateway utilizing JWT and OAuth 2.0 to secure internal administrative endpoints. Automated frontend and backend testing pipelines with GitHub Actions using Jest and PyTest, reducing CI build times to under 15 minutes. Optimized nested PostgreSQL queries with SQLAlchemy and introduced Redis caching, cutting API response times by 49%. Migrated a monolithic legacy portal to a component-driven React architecture, delivering 4 core modules in a 6-week sprint.

Developed 10+ interactive supply chain monitoring components using React.js, Context API, and Tailwind CSS for an enterprise logistics platform. Refactored Express.js REST APIs and added MongoDB indexing via Mongoose, increasing data retrieval speeds by 31% under peak loads. Built asynchronous background task processing with Python, Celery, and Redis for shipment tracking alerts and email notifications with zero downtime. Containerized Node.js and Python microservices with Docker to standardize development across a 12-person team. Aggregated real-time shipping data from 3 third-party APIs via GraphQL, enhancing data visibility. Collaborated with UI/UX designers and product managers to translate Figma wireframes into responsive, cross-browser features.