Sarthak Gaur
Software engineer in San Diego. The systems I work on tend to live where software meets physical things: IoT gateways that need to survive a year on a forklift, and pipelines nobody wants to wake up at 3am for.
Mostly I think about the long middle of a system's life, after the launch and before the rewrite.
Now · October 2026
- Leading TracFlow at Tag-N-Trac, a multi-tenant AI workflow engine that has to give the same result every time it runs.
- Building Fractal, a shared drawing canvas. Zoom into a drawing and keep adding detail, together. Most of the recent posts here come out of it, starting with My Rate Limiter Caught Me First.
- Mixing drinks, too. Tipple is my cocktail database, because I like making drinks more than I like recipe sites.
Writing
Performance work, reliability, and figuring out how to work with AI as it keeps changing.
- Two Agent Sessions Is What I Can Review
- The Version That Looked Faster
- A Snapshot Paired with the Wrong Log
- What Unchanged Means
- What an Eraser Erases