Marcus Adeyemi

Marcus is a senior React Native engineer based in Berlin with twelve years in mobile, the last seven of them in JavaScript-driven cross-platform work. He spent three years at SoundCloud rewriting the listener app's playback queue and offline-download stack on top of TrackPlayer, and another two and a half years at Delivery Hero leading the rider app's reliability work across 30+ markets. He started out as a native iOS developer at a smaller agency shipping white-label banking apps, which still shows up in his writing whenever the topic turns to bridging Swift code or wrangling Xcode build settings. Most of his posts here cover Reanimated 3 and Gesture Handler internals, CodePush versus EAS Update tradeoffs, and the kind of Hermes crash reports that only show up in production. He occasionally speaks at React Native EU.