Bhumika Yaduwanshi

I’m a Full-Stack Engineer with 4.5+ years of experience designing and developing scalable, backend-driven web applications. I focus on backend architecture, API development, performance optimization, and cloud-based deployments, while building secure systems that protect data and access.

At Precious Infosystem, I designed and maintained scalable backend services using Node.js, Nest.js, and Express.js with microservices architecture for high availability and strong performance. I built and optimized RESTful APIs for authentication, product catalog, cart, coupons, and payment workflows, and used Redis caching to reduce API response times across MongoDB, PostgreSQL, and MySQL.

I also developed secure authentication and authorization using JWT and OAuth, and improved reliability through logging, debugging, and error handling in production. I collaborate closely with frontend teams to integrate React.js applications, coordinate state management, and ensure seamless end-to-end user experiences.

From building a professional social networking backend (role-based access control, secure authentication, query optimization) to an EdTech platform and an event management system with QR-based ticketing and real-time validation, I’m driven by delivering scalable, dependable products.