Real-time web experiences that scale.
Frontend focused full-stack developer
Hi, I am Birat Bhattacharjee, a Frontend focused full-stack developer with 6 years of experience building scalable, high-performance web applications using React, TypeScript, Node.js, and Go. I specialise in designing and implementing scalable frontend architecture, real-time systems, and performance optimisation, working with technologies such as WebRTC, WebSockets, and Server-Sent Events.
I've led large frontend initiatives, built reusable UI platforms and component libraries, worked with monitoring tools like Sentry, Kibana, CubeAPM and developed backend micro-services that support thousands of users. My focus is on writing clean, scalable code through well-structured architectures, reusable abstractions, and solid test coverage, while collaborating closely with cross-functional teams, mentoring engineers through code reviews and design discussions, and driving reliable releases via strong CI/CD practices.
Publishing the UI library only as `latest` gave every app the same build—and one bad release a full prod blast radius. Branch pipelines, commit-driven semver, npm tags per env, and tagged installs in app builds.
Live clinical audio transcription in the browser— reducing transcription time by ~80% (10s → 2s).
Pooling multiple conference events using a single SSE stream.
App Router streaming + Suspense.
