- Collaborated in all phases of the software development lifecycle of a GraphQL developer tool. - Developed a comprehensive NPM package that enables users to monitor and optimize traffic in GraphQL API-based applications, covering 95% of key metrics such as latency, request counts, response data and errors.- Designed an algorithm to parse through client GraphQL queries and visualized important metrics with D3. - Built an internal GraphQL playground to improve API development efficiency for end-users.- Optimized browser rendering time by removing unnecessary API calls and employing client-side caching. - Integrated TypeScript to an existing codebase to support compile-time type checking, minimize run-time errors and create a formal contract between client and server, improving code consistency and streamlining development workflow.- Managed and maintained application infrastructure with AWS EC2 and CloudFront to enhance read performance and application availability. - Product developed under the tech accelerator OS Labs.

- Created a cross-platform mobile application with React Native that communicates with Node and Python microservices.- Leveraged GraphQL as the underlying API to enhance data fetching and HTTP communication capabilities, empowering more robust querying while minimizing data transfer overhead.

- Refactored and simplified state management with Redux, allowing for a more manageable and scalable application with multiple interrelated data states.- Implemented a token-based authentication workflow with JWT and ensured secure transmission of information.- Created unit test with Jest framework and React Testing Library to ensure reliability and stability of the application.

- Developed and implemented Express REST APIs to facilitate trading interactions and communication between the front-end and back-end of the application.- Designed an ACID-compliant PostgreSQL database to optimize transactions in the marketplace, ensuring data integrity against concurrent execution of database queries.- Improved user experience with React.js and optimized client-side routing with React Router, enabling seamless navigation and optimizing data flow between views.