My First Foray into Harness Engineers

When our team set out to build BypassHire — an AI tool that cuts job-application time from 45 minutes to under 5 — we quickly realized that the interesting engineering challenge wasn't the model. The model was the easy part. The hard part was everything around it. Martin Fowler recently named that surrounding layer: harness engineering . A harness is everything in a coding-agent setup except the model itself — the guides, sensors, rules, and scaffolding that determine whether the agent produces