Software Engineer · AI Systems · Building in publichttps://kevingao25.github.iohttps://kevingao25.github.io/blog/hello-worldhttps://kevingao25.github.io/blog/hello-worldAn introduction to this blog: what I'll be writing about, why I'm making the jump from distributed systems to AI engineering, and what you can expect.Sat, 14 Mar 2026 00:00:00 GMT<h2>Why This Blog Exists</h2> <p>I'm Kevin — a software engineer at AWS DynamoDB transitioning into AI engineering. This blog is where I'll document what I learn, build, and think about along the way.</p> <p>After graduating from the University of Waterloo and spending time building distributed systems at scale, I've become deeply fascinated by what's happening in AI — particularly at the systems layer. Not just the models, but the infrastructure around them: RAG pipelines, agent orchestration, evaluation frameworks, and the engineering craft of making AI systems reliable in production.</p> <h2>What I'll Write About</h2> <ul> <li><strong>RAG Systems</strong> — Retrieval-augmented generation architectures, chunking strategies, vector databases, and retrieval evaluation</li> <li><strong>AI Agents</strong> — Multi-agent orchestration, tool use, planning, and real-world agent design patterns</li> <li><strong>LLM Evaluation</strong> — Benchmarking, RAGAS, human-in-the-loop evaluation, and how to know if your system actually works</li> <li><strong>Systems Thinking</strong> — Lessons from distributed systems that apply to AI infrastructure</li> <li><strong>Career Notes</strong> — Reflections on navigating the transition from SDE to AI engineer</li> </ul> <h2>Building in Public</h2> <p>Everything I learn, I'll share here. The goal is to think clearly by writing, and hopefully help others on a similar path.</p> <p>Let's get started.</p>