Thomas Johnson

Is there a better compliment for an engineering manager?

The worst part of a flaky test isn’t that it fails. It’s that no one trusts it when it passes.

Hooked up a full-stack session replay to Cursor. Watching it suggest a fix with actual request/response data was… kind of magic.

The moment a bug enters production, every missing trace becomes a tax on your time.

Spent the afternoon breaking the demo app in different ways and recording how we fix it with full-stack replays and AI-assisted suggestions. It was fun! 😆

In distributed systems, the hardest part of debugging isn’t finding the bug. It’s figuring out whose responsibility it is to fix it.

Multiplayer: "Don’t worry, we recorded their machine for you.” ▸ Here’s the full-stack session replay with the bug. ▸ Here’s the test script that reproduces it. ▸ Here’s what your AI tool suggests. ▸ Here’s how to fix it.