Debojit Bhattacharya

I’m a Backend Engineer focused on architecting production-ready services end-to-end—from technical design to high-availability deployment. At Evu, I delivered backends with Node.js, Express.js, and MongoDB for multiple client ventures, and I’ve shipped automation features that handle real traffic spikes reliably.

I specialize in building practical AI workflows, like an audio-to-text pipeline combining Whisper/Google STT with Gemini LLMs to extract structured data with low latency. I also engineer event-driven systems (WhatsApp APIs, state machines, transactional referral engines) and marketplace/referral infrastructure with secure JWT session management, optimized MongoDB indexing, and dependable sync pipelines using backoff and atomic operations.