Kunal User

I’m a B.Tech in Information Technology student where I focus on building reliable, production-minded web applications—especially with Node.js/Express backends and React frontends. I enjoy turning requirements into secure APIs, clean interfaces, and maintainable code.

In my “Banking Transaction System” project, I developed a scalable backend using Node.js and Express.js with JWT-based authentication and secure password handling (bcrypt). I designed a ledger-based architecture, added idempotency to prevent duplicate transactions, and used MongoDB aggregation pipelines to compute balances efficiently—then validated everything with Postman.

I also build user-focused experiences, like a responsive React e-commerce site using React.js, Redux, and Bootstrap (including dynamic product listings and shopping cart functionality). Beyond apps, I’ve strengthened my problem-solving foundation by solving 500+ DSA questions during Coding Ninjas Advanced DSA and earning “Excellence” certificates in Data Structures and Algorithms and Front End Development, while serving as Joint Secretary to lead 15+ workshops and improve participation by 40%.