Sultane User

I’m a Backend Software Engineer specializing in Python and distributed systems, with hands-on experience designing scalable REST APIs, real-time WebSocket systems, and production-grade AI/RAG pipelines. I focus on system design, performance optimization, and production-ready engineering practices.

At SmartSparesHub (OCP Group Startup), I architected and shipped a scalable multi-role marketplace backend in Python (FastAPI), delivering 15+ endpoints across product, order, and user workflows. I reduced average API response time by ~35% using query optimization, indexing, and connection pooling on PostgreSQL, while securing the platform with JWT authentication and role-based access control (RBAC). I also applied CI/CD practices and containerized the full stack with Docker for reproducible deployments.

On the projects side, I built an AI Book Assistant RAG pipeline with LangChain/LangGraph and FAISS that queries 500+ pages with sub-second retrieval latency, improving context relevance by ~40% versus naive retrieval. I’ve also delivered real-time systems like a streaming backend with <100ms WebSocket latency and a multiplayer Pong server at 60 updates/sec, plus containerized infrastructure using Docker Compose, Nginx, and MariaDB—always aiming for scalable, secure, high-impact results.