monal kumar

I’m a Senior Full-Stack Developer with 4+ years of experience build scalable, production-grade MERN and Next.js applications. I bring a strong system design foundation (HLD/LLD) and a security-first mindset, with an emphasis on clean, maintainable code and TypeScript type safety.

I independently architected and built CloudVault, a production-ready SaaS MVP featuring distributed rate limiting, cursor-based pagination, edge middleware authentication, and CDN-backed file delivery. I designed modular, scalable architecture with separated concerns across API, service, and data layers, then deployed it on Vercel serverless + edge runtime while tackling cold-start and performance bottlenecks.

Previously, I led the migration of legacy BMJ journal sites to Next.js + TypeScript, improving SEO outcomes and achieving a 100% Lighthouse SEO score. I implemented SSR/SSG strategies, optimized React performance, integrated RESTful APIs with backend teams, and built comprehensive unit/E2E test coverage with Jest and React Testing Library.

Earlier roles strengthened my end-to-end delivery skills—from building real-time experiences with WebRTC and Socket.io in BrihhaLMS to developing performance-focused UIs with React/Next and Webpack optimizations. I’m motivated by shipping real products that scale in the real world—with practical security, reliability, and measurable performance improvements.