Aaban Rehman

I’m a .NET AI Engineer focused on turning AI capabilities into reliable, production-grade systems. I ship enterprise microservices with ASP.NET Core and C#, and I now specialize in RAG pipelines, LLM-orchestrated agents, and vector search in .NET.

My engineering approach is pragmatic and quality-first: I build end-to-end pipelines, enforce correctness constraints, and design retrieval that works under real-world data. I’m also Microsoft certified in Azure AI Fundamentals (AI-900) and Azure Fundamentals (AZ-900).

In my recent roles, I architected 10+ ASP.NET Core microservice projects using DDD and Vertical Slice Architecture, improving scalability and fault isolation. I optimized SQL Server and EF Core to reduce database latency by 35%, integrated Stripe/PostGrid/USPS to cut third-party integration errors by 30%, and built background services that halved user-facing response times.

In personal projects, I translate the same reliability mindset to AI: I built an agentic proposal generation engine with Microsoft.Agents.AI 1.0 and Llama 3.3-70B, and a semantic Islamic knowledge assistant with a complete .NET RAG pipeline backed by pgvector. For sensitive domains, I enforce mandatory citations and scholar consultation notes as a hard architectural rule, and I designed retrieval to minimize hallucinations.