I'm Saifur Rahman Tamim, a Full-Stack Developer based in Dhaka with over 4 years of professional experience building production software. I specialize in designing and shipping SaaS products end-to-end — multi-tenant backend architecture, database design, API development, and containerized deployment.

My core stack includes C#/.NET, NestJS, TypeScript, PostgreSQL, MS SQL Server, and Redis, with Docker and Nginxhandling my deployment workflows. I've built everything from CRM platforms and multi-tenant inventory systems to e-learning platforms with encrypted video streaming, payment integrations, and examination engines. I design scalable database schemas, write optimized queries, and handle message queues with RabbitMQ and BullMQ. I currently maintain multiple Linux production servers hosting SaaS products, e-learning platforms, e-commerce sites, and more — alongside a Windows Server environment.