I've built and maintained backend APIs for Toddle, a school management platform, using Node.js, GraphQL, Express.js, PostgreSQL, and AWS. I developed an attendance system for daily and class-period student tracking.
I improved PostgreSQL queries and reporting through indexing and table partitioning, and helped convert parts of a monolith into easier-to-deploy microservices. I also monitored production systems to support stable releases.
At Winuall, I developed REST and marketplace APIs for coaching institutes, courses, orders, and payments using Node.js, Express.js, MongoDB, and Redis. I improved page rendering and API response times through virtualization, caching, and MongoDB query optimization.
I've also built e-commerce and mutual-fund portfolio backends with JWT authentication, role-based access control, scheduled jobs, caching, and automated API testing.
