Backend Developer

**Job Description:** **Role Overview:** You will be responsible for building real-time chat services using WebSockets (Pusher / Ably / Socket.io) and designing and optimizing database schemas using PostgreSQL + Prisma. Additionally, you will implement message queues (BullMQ / Redis Streams) for scheduling & notifications, develop REST and GraphQL APIs for chat, groups, search, and media uploads, and manage file uploads using Cloudflare R2 / S3 for images, docs, and voice notes. Moreover, you will implement authentication & authorization (JWT / Clerk / NextAuth) and optimize chat performance including read receipts, typing indicators, and message sync. **Key Responsibilities:** - Build real-time chat services using WebSockets (Pusher / Ably / Socket.io) - Design and optimize database schemas using PostgreSQL + Prisma - Implement message queues (BullMQ / Redis Streams) for scheduling & notifications - Develop REST and GraphQL APIs for chat, groups, search, media uploads - Manage file uploads using Cloudflare R2 / S3 (images, docs, voice notes) - Implement authentication & authorization (JWT / Clerk / NextAuth) - Optimize chat performance with read receipts, typing indicators, message sync - Integrate caching and pub/sub using Redis (Upstash) - Ensure API security, rate limiting, load balancing, and data consistency - Maintain CI/CD pipelines and production deployments (Vercel / DigitalOcean) - Perform code reviews & follow clean coding standards **Qualification Required:** - Strong knowledge of TypeScript + Node.js / NestJS - Hands-on experience with Prisma ORM, PostgreSQL indexing & migrations - Experience with Redis, caching, sessions, pub/sub, presence - Familiarity with S3 / Cloudflare R2 storage - Experience with containerization: Docker, Git, CI/CD - Good understanding of system design and scalable backend architecture **Additional Details:** You will benefit from a 5-day working schedule (Mon-Fri) and work onsite in Vesu, Surat, India. The position offers exposure to real-time chat systems, message queues, and scalable architecture. You will also gain experience with Next.js + NestJS + Prisma + PostgreSQL + Redis and cloud deployment on platforms like Vercel, DigitalOcean, and Cloudflare. Moreover, you will be part of a fast-growing team with a good work culture and opportunities for career growth.,