Open to opportunities

Rupankar Das

@rupankardas

Message

I build scalable Node.js APIs, microservices, and cloud systems serving real users.

India

Message

What I'm looking for

I'm looking to build scalable backend and cloud systems where I can own API and microservice development, work on real-time distributed workflows, and continue growing through production engineering challenges.

I've built and shipped backend systems at Nexintel Synergy Pvt. Ltd., including a Library Management System serving 1,000+ active users and three government web portals serving thousands of citizens.

I deliver REST APIs with Node.js, Express.js, TypeScript, Prisma, PostgreSQL, MongoDB, AWS, JWT, and OAuth2. My work has included RBAC that eliminated unauthorized production access, MongoDB query improvements that reduced response time by 35%, and GitHub Actions pipelines that cut deployment time by 40%.

In DineSync, I architected a multi-tenant SaaS backend with nine independent microservices, Apache Kafka event streaming, Redis-based kitchen queues, Socket.io dashboards, and AWS infrastructure. I also built GeoTrackr, a GPS- and QR-based attendance platform with geofencing and real-time monitoring.

I'm continuing my Computer Science Engineering degree while building production-ready systems focused on reliable APIs, real-time workflows, and scalable cloud deployment.

Experience

Work history, roles, and key accomplishments

Current

Junior Software Engineer

Current

Nexintel Synergy Pvt. Ltd.

Jul 2025 - Present (1 year 2 months)

Led end-to-end development of a Library Management System serving 1,000+ active users, including modules for book issuance and return, fine calculation, points-based rewards, and membership card generation. Architected and enforced Role-Based Access Control (RBAC) with JWT and OAuth2 across all API endpoints, eliminating unauthorized access incidents in production.

PostgreSQL AWS RDS PM2 GitHub Actions CI CD JWT RBAC