Moved to a CRDT-style merge; offline conflict reports fell 45% quarter over quarter.
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The app felt fine on a developer laptop and slow on the devices and networks our users actually had. I made performance a first-class constraint with budgets enforced in CI, then went after the critical path until the numbers held on mid-tier hardware.
Moved to a CRDT-style merge; offline conflict reports fell 45% quarter over quarter.
The app was unusable for anyone on a screen reader or a keyboard, and nobody had noticed because nobody on the team worked that way. I made accessibility part of the definition of done — fixed the semantics and focus order, then wired the checks into CI so it couldn't quietly rot back.
Moved to streaming SSR and trimmed hydration; Time to Interactive fell 15% on real connections.
Our biggest form was also our biggest drop-off — a wall of fields that punished one mistake by clearing half of them. I rebuilt it around forgiving validation and progressive disclosure, so people could finish without feeling interrogated.
Componentized 23 patterns into one library; 9 product teams now ship from it.
Turn messy real-world problems into systems people can actually trust.
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