How Affirm Retooled 800+ Engineers for Agentic AI Development in One Week
By
brd529
A baker's-dozen of insight crammed into one ring.
Summary
In February 2026, Affirm paused normal engineering operations for one week and tasked over 800 engineers with using agentic AI tools to handle real development tasks from ideation through code review. The initiative resulted in over 60% of pull requests becoming agent-assisted. The article, written by Sr. Director of Engineering Daniel Martin, details the preparation, execution, and outcomes of this organizational retooling, including how they rethought their systems and workflows to effectively integrate agentic software development.
Key quotes
· 3 pulledIn February 2026, we paused normal engineering delivery for a week and asked over 800 engineers to use agentic AI to take real tasks from ideation through implementation, testing, and code review.
We made a deliberate bet that agentic tools had matured enough to change how we work, and that adopting them well would require rethinking the systems around them.
This post covers how we got to a place where over 60% of our pull requests (PRs) are agent-assisted: why we did it, how we prepared, what the week looked like, what b
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