YouTube Backend Clone | Node.js, Express.js, MongoDB, JWT Built a backend application for a YouTube-like platform, implementing 10+ APIs for user authentication, video uploads, and CRUD operations. Designed a scalable database schema with MongoDB aggregation pipelines and optimized queries Integrated JWT authentication and 5+ middleware for error handling, logging (Morgan, Winston), and request validation. Ensured 95% server uptime with health-check routes, professional debugging, and structured responses. Wrote Postman tests for API endpoints and deployed with comprehensive documentation.