Senior Full Stack Developer at Kintsugi Health

Built high-performance dashboards using React, Next.js, TypeScript, and Recharts for time-series data. Created a serverless backend on AWS with API Gateway, Lambda, and AppSync to deliver personalized health insights via GraphQL and REST endpoints; designed schema and resolvers to unify data from microservices. Managed DynamoDB tables with optimized GSIs/LSIs, leveraging S3 for analytical datasets; wrote PartiQL queries for reporting and data integrity checks. Implemented real-time streaming and notifications using WebSockets, AppSync subscriptions, and Lambda + SQS for instant health feedback. Developed a custom hooks library for async data fetching and state management; implemented interactive filtering and date-range selectors for correlating health metrics. Improved frontend performance with React.memo, useCallback, virtualized scrolling, and lazy loading; profiled using React DevTools and Chrome Lighthouse.

Software Engineer at Tenderly

Developed a responsive, SSR-enabled NFT marketplace frontend using React, Next.js, and TypeScript, with state management via Redux Toolkit. Implemented Incremental Static Regeneration (ISR) for product pages to blend the benefits of static site generation with dynamic data updates, greatly improving SEO and perceived load times. Built a robust backend API with Node.js, Express, TypeScript, and GraphQL (Apollo Server), implementing DataLoader to batch and cache database calls, reducing API load times by 30%. Designed the GraphQL schema to be strongly typed, auto-generating TypeScript definitions for the frontend, ensuring end-to-end type safety. Integrated Web3.js and Ethers.js for secure blockchain interactions, including wallet connection (MetaMask), NFT minting, bidding, and transfer functionalities on the Ethereum and Polygon networks. Established a comprehensive testing suite with Jest for unit/integration tests and Enzyme (later React Testing Library) for component testing, achiev