Shamil SherhanNotes on building things — AI systems, side projects, tools, and whatever I'm tinkering with.https://sherhan.vercel.app/Testing Non-Deterministic Agents in CIhttps://sherhan.vercel.app/blog/testing-nondeterministic-agents-in-ci/https://sherhan.vercel.app/blog/testing-nondeterministic-agents-in-ci/A practical design for combining deterministic contracts, semantic checks, DeepEval, Promptfoo, and dual LLM judges without letting flaky evaluation hold every pull request hostage.Sat, 19 Sep 2026 00:00:00 GMTLessons from Building a Hybrid RAG Pipelinehttps://sherhan.vercel.app/blog/rag-pipeline-lessons/https://sherhan.vercel.app/blog/rag-pipeline-lessons/Why pure vector search isn't enough, and how combining knowledge graphs with embedding retrieval produces significantly better results.Tue, 10 Feb 2026 00:00:00 GMTBuilding Multi-Agent Systems with LangGraphhttps://sherhan.vercel.app/blog/building-multi-agent-systems/https://sherhan.vercel.app/blog/building-multi-agent-systems/Lessons learned from architecting a production multi-agent system for supply chain Q&A — from naive chains to specialized agent orchestration.Thu, 15 Jan 2026 00:00:00 GMT