Ryan Lopopolo: OpenAI's Framework for Shipping Code at 70 PRs/Week

Most engineering teams are still arguing about whether to use AI coding agents.Ryan Lopopolo's team at OpenAI shipped an entire product with no human-written code — and onboarding a new engineer made the team faster within two weeks.That outcome didn't come from better prompts. It came from what Ryan calls Harness Engineering: the systems, constraints, and feedback loops that sit around the agent — the context it sees, the tools it can call, the tests and linters that close the loop, and the asy