Roshan Kumar

I've built a modern e-commerce web application with Next.js, TypeScript, Tailwind CSS, Stripe, Sanity, and Vercel. I used SSR and SSG to improve SEO and reduce initial page-load times by 40%.

I integrated secure Stripe checkout and webhooks for real-time payment and inventory updates, while building a headless CMS workflow that lets administrators manage products, pricing, and marketing banners without code changes.

I also developed a real-time analytics dashboard using React, Node.js, Express, MongoDB, Chart.js, and Socket.io. The dashboard delivers live metrics through persistent WebSocket connections and includes REST APIs for filtering, pagination, and indexed telemetry-data queries.

I'm focused on accessible, mobile-first interfaces, reliable API integrations, performance optimization, and maintainable web architecture.