Rohit Kumar

I’m a Senior Frontend Engineer specializing in React/TypeScript performance optimization at enterprise scale, with 3.5+ years delivering component-driven, accessible web applications in Agile environments.

I’ve consistently driven measurable outcomes—40% faster load times, Lighthouse 95+, 80% test coverage, and $2M+ in annual platform revenue—by improving high-frequency render paths and strengthening quality through automated testing.

In my current role, I built a GPT-powered enterprise chat frontend in React + TypeScript for 1,000+ active users, managing async workflows, file uploads, and chat history with Redux and reducing support tickets by 40% via REST API integration and tighter product logic.

I also shaped enterprise foundations with a micro-frontend design system (50+ reusable components in an Nx monorepo) and AG Grid virtualization to render millions of records at sub-second speed, raising Lighthouse scores from 68 to 95+. Alongside this, I improved developer and release reliability with optimized React lazy loading and automated CI/CD using AWS + Terraform, cutting deploy time 50% and eliminating 90% of environment bugs.