Irfan Sadik
Backend Devloper MERN,typescript,Nestjs
Chittagong University of Engineering and Technology
Project
Built a ledger-based banking API with 8 REST endpoints across auth, accounts and transactions, where balances are never stored: each one is computed from immutable CREDIT/DEBIT entries using a MongoDB aggregation, and Mongoose hooks block any update or de
Project
Built a coding-agent harness from scratch with streaming responses and a full agent loop (LLM, tool call, result, back to the LLM), giving the model 5 tools (read, write, list, search, shell) to inspect and edit a real codebase through an OpenAI-compatibl
Project
Built a multiplayer chess app where game state syncs between players through a Socket.io server, and added live video and audio calling between opponents over peer-to-peer WebRTC.
Project
Split a ride-hailing backend into 4 independently runnable services (gateway, user, captain, ride) exposing 13 REST endpoints through one entry point, using an express-http-proxy gateway and giving each service its own models, database connection and conf