Ian Johnson

Ian Johnson is a staff engineer at Parento, where he runs the engineering team's adoption of AI coding agents and the harness work that keeps that adoption from breaking in production. He owns and operates Fulcorum, a video learning platform that teaches agentic engineering. He wrote five open-source projects that support reliable AI output: Keystone, Open Refinery, Sigma, Ghola, and Gauge. He has been writing about this work at blog.tacoda.dev since 2024 via Medium and the DEV Community. He lives outside Austin with his family.