by Mike Krieger
When AI writes 90% of the code, the traditional PM-Designer-Engineer handover breaks down. The bottleneck shifts from 'writing code' to 'decision making' (upstream) and 'merge queues' (downstream). Teams must re-architect their infrastructure and review processes to handle this velocity.
Core Principles
- 1.Shift Prototyping Left: PMs and designers use tools like Claude Artifacts to build functional prototypes, not just mockups.
- 2.Re-architect Critical Paths: Optimize merge queues and CI/CD pipelines as the volume of Pull Requests (PRs) explodes.
- 3.AI-Assisted Review: Use AI agents to review AI-generated code, focusing human effort on acceptance testing rather than line-by-line syntax checks.
"We really rapidly became bottlenecked on other things like our merge queue... Over half of our pull requests are Claude Code generated. Probably at this point it's probably over 70%... or 90%."