Scaling Under Fire: The 'John Wick' Rewrite and How Mercor Engineers Think About Reliability

Mercor's engineering blog is unusually candid about what breaks when volume grows 10x in a month. This module unpacks the one-week Contracts rewrite, the payments system that moves $2M+ a day, and the lessons engineers there say they learned - the raw material for your own stories about ambiguity, scale and ownership.