My role
Cross-platform engineer — watch companions, streaming metrics, and charts.
Overview
Built a fitness companion in Flutter with native platform channels to watchOS and Wear OS. Heart-rate and pace stream from the watch to the phone over a low-latency channel and render on animated charts. Workouts are stored locally with Isar and reconciled to the backend, so a run recorded underground shows up the second the phone is back online.
Role & impact
Impact
Held a 99.9% crash-free rate across 210k monthly active users on both platforms.