The answer
Node.js, Express, MongoDB with Mongoose, JWT authentication with HTTP-only cookies, Socket.io for real-time chat, PM2 for process management, and Nginx as a reverse proxy.
DevTinder Project Overview and GitHub Repos Full Stack Node.js Project Structure
What tech stack does the DevTinder backend use?
More FAQs in DevTinder Project Overview and GitHub Repos Full Stack Node.js Project Structure
Two repositories enable independent deployment (backend on EC2, frontend on Vercel), separate team workflows, different tech stacks, and a clean API contract as the only coupling between frontend and backend.
React, TailwindCSS for styling, Redux Toolkit for state management, React Router for client-side routing, Axios for HTTP requests, and Socket.io client for real-time chat.
Clone both repositories, run npm install in each, copy .env.example to .env and fill in the MongoDB URI and JWT secret for the backend, and the backend API URL for the frontend. Then run npm run dev in both.
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