The problem
A failed build produced thousands of lines of output and one useful one. Engineers had stopped opening the log and started asking whoever last touched the pipeline.
Kiln
Kiln runs builds for teams who ship many times a day. Its logs were accurate and nobody read them.
- Role
- Design engineer
- Team
- Two engineers and a designer
- Built with
- React, TypeScript, Rust
- Year
- 2026
What I built
A log view that folds passing work away and opens on the first real failure, with the commit that caused it alongside. Streaming stays smooth on very long runs because only the lines on screen exist in the DOM.
What changed
Time from a red build to the first fix fell by more than half in the first quarter after launch.
