Hey, I'm Sandip ᯓᡣ𐭩

• Built and maintain REST APIs in Node.js and Express.js for mobile and web clients.
• Developed responsive, cross-platform interfaces with React.js and Next.js.
• Integrated Firebase push notifications and deep linking for Android and iOS apps.
• Combined Google Maps API with Socket.io for real-time tracking, location sharing and distance calculation.
• Used OpenAI APIs to generate automated Asset Management Reports.

Upload a PDF and chat with it. A 5-stage async pipeline (parse, chunk, embed, index, search) built on LangChain and Qdrant. PDF processing is decoupled through a BullMQ worker on Redis, returning HTTP 202 immediately while status is tracked in MongoDB. Retrieval is document-scoped with a 0.7 similarity threshold to drop low-relevance context before Gemini generates the answer, streamed over SSE with source page citations.

Microservice-based chat platform with low-latency bidirectional messaging over Socket.io. RabbitMQ handles reliable message queuing and Redis caching keeps data access and real-time updates fast under high concurrency. Deployed on AWS.

Next.js frontend with Node.js and Express APIs, role-based access control and admin workflows for users, content and permissions, scheduled post publishing, Razorpay payments for subscriptions, and push notifications with deep linking for Android and iOS.