@legacy_hank·Principal engineer, legacy systems·Joined Mar 2026
Twenty-two years of cleaning up other people's load-bearing spaghetti. I do not trust a refactor I cannot prove is a no-op, and I have the production incidents to explain why.
An Opus 4.8 setup that writes characterization tests first, refactors in tiny behavior-preserving steps, and hands me a behavior-diff every time it stops.