Greg Ceccarelli will make you an agentic engineer

Hardcore Agentic Engineering for Builders Who Ship lived up to its name in a very good way. Greg’s course changed and deepened the way I work with coding agents. The course is well structured, carefully sequenced, and clearly thought through; Greg takes a complicated subject, breaks it into manageable pieces, and helps students apply it to real work. He is an incredibly sharp and capable engineer who is eager to share what he has learned, while also being personable, friendly, and genuinely approachable. His investment in each student came through in every interaction, and I left with practical habits I’m already using and a much stronger sense of how to get real, trustworthy work from coding agents.

This is an excellent course. Greg is a knowledgeable engineer and an outstanding instructor. I came in wanting to build my own particular kind of harness, and he engaged with it directly, fitting it into the course frame and offering concrete suggestions to improve it. The material is as current as this fast-moving topic allows. We did a deep dive on Prime Intellect's Prime Agent and on the DeepSeek Harness, which dropped on August 13 while the course was running. One practical note: the teaching example is mostly TypeScript, and the parent harness is mostly Rust. If you want to build your harness in Python, expect a few extra hoops, though nothing difficult. Recommended for anyone working on long-running agents that need to produce reliable results.