Omar S.

Software Engineer specializing in NestJS and microservices architecture, with hands-on production experience building real systems used by actual clients.

I worked at Techkhana as the primary engineer on an Agentic AI microservice built with FastAPI, LangChain, LangGraph, OpenAI API, and AWS Bedrock — serving real clients in production for 360 hours.

For my graduation project (StyleHub), I was the sole owner of a full social media backend built with NestJS, TypeScript, and PostgreSQL — 57 REST endpoints, real-time chat, RabbitMQ event infrastructure, and a Flutter mobile app. The AI recommendation engine achieved AUC-ROC 0.93 and 92.87% accuracy.

What I build:

- REST APIs with NestJS and FastAPI

- Microservices with RabbitMQ and event-driven architecture

- Real-time systems

- Agentic AI systems with LangChain, LangGraph, and RAG pipelines

- CI/CD pipelines with GitHub Actions and Docker