An incremental tracing GC for our embedded runtime, optimized for small heaps. The fun part: it ships smaller than the libc we were using.

How we got our PR agent from "draft this function" to "ship the whole feature." The trick wasn't a bigger model it was a smaller planner.

A short essay on how a 280-year-old typeface ended up on our marketing site, and the case for restraint in developer tooling design.

Cache eviction. Cascading retries. Two engineers paged at 3am. Here's the timeline, the root cause, and what we changed so it never happens again.