Engineering decisions from real engagements, with the trade-offs and the mistakes left in.
Most "offline support" is a cache with optimistic writes, and it fails the first time two people edit the same record on a train. What actually works is treating the local database as the source of truth — including the part nobody enjoys, which is deciding who wins a conflict and how a human can audit it.
Mobile teamMobile11 min read
Read the article: Offline-first is a data model, not a cache5 articles
What INT8 quantisation actually cost on a production defect-detection model, measured rather than assumed — including the two classes where it did cost something, and why we shipped anyway.
AI9 min read
Setting the target against a five-year-old mid-range phone instead of the developer laptop, wiring it into CI, and what happens politically when the build fails for being 200ms slow.
Engineering7 min read
Where sharing code paid for itself, where it cost more than two native codebases would have, and the rule we now use to decide before writing anything.
Mobile14 min read
Empty, loading, partial, stale, offline, error and permission-denied. The states nobody puts in the Figma file are the ones users hit on their worst day.
Design8 min read
We changed our hiring exercise three times. Here is what each version measured, what it accidentally selected for, and why we now pay for it.
Team6 min read