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Patterns for building LLM-based systems and products
Evals, RAG, fine-tuning, caching, guardrails, defensive UX, and collecting user feedback.
I work to bridge the field and the frontier, and help build safe, reliable AI systems that scale. I also write and speak about AI-powered systems and products, and prototype for fun.
Visit eugeneyan.com → On Hacker News Mar 2020 – Oct 2025
AI & Machine Learning 7Life, Learning & Writing 4Web & Frontend 3Tools & Productivity 3Career & Management 3Software Engineering 2
Evals, RAG, fine-tuning, caching, guardrails, defensive UX, and collecting user feedback.
Pushing back on the cult of complexity.