Full-stack web app: React, Next.js, Node.js, MongoDB. I design and build complete web applications end-to-end - responsive React/Next.js frontend, Node.js/Express backend, MongoDB data layer, deployed and working. Real example: Vartalap, a real-time chat app I built from scratch with Socket.IO. Starting at $200, typical turnaround around 2 weeks depending on scope. Based in Indore, India.