Apr 28, 2026 Why Domain Expertise Beats Coding in the AI EraThe author of LLM Engineer's Handbook tells engineers to stop specializing in code — and start specializing in a domain. Insight career advice AI engineering software career vertical AI domain expertise
Apr 24, 2026 Why Most AI Teams Don't Actually Need RAGPaul Iusztin (Founding AI Engineer, author of LLM Engineer's Handbook) explains why RAG hurts more than it helps in production AI agents — and the 64,000-token threshold that should change how you think about retrieval. Insight RAG LLM engineering AI agents context engineering vertical AI