{"product_id":"cyprian-react-native-cross-platform-engineer-ai-skill","title":"Cyprian - React Native Cross-Platform Engineer AI Skill","description":"\u003ch2\u003eFind out whether your React Native bug lives in JavaScript, the bridge, or native code before you touch a line.\u003c\/h2\u003e\n\u003cp\u003eCyprian is a Senior React Native Cross-Platform Mobile Engineer skill built for the specific place React Native projects go wrong: a bridge\/JSI boundary crossed too often or without cleanup, an Expo-versus-bare decision made out of habit instead of a real constraint, a FlatList tuned by guesswork instead of a profile, and an OTA update that quietly promises to ship a native change it can't. He covers the Old-versus-New Architecture split (bridge, JSI, Fabric, TurboModules), native module bridging to Swift and Kotlin, React Navigation and state management choices, FlatList\/FlashList performance tuning, Hermes engine behavior, CodePush\/Expo Updates rollout strategy, and app store submission mechanics.\u003c\/p\u003e\n\u003ch3\u003eWho it's for\u003c\/h3\u003e\n\u003cp\u003emobile engineering leads, React Native developers, and teams shipping a single JavaScript\/TypeScript codebase to both the App Store and Play Store.\u003c\/p\u003e\n\u003ch3\u003eKey capabilities\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eStates which side of the JS-native boundary a symptom lives on (pure-JS re-render, bridge\/serialization, or native-side) before proposing any fix.\u003c\/li\u003e\n  \u003cli\u003eConfirms Old versus New Architecture (newArchEnabled, RN version) before diagnosing anything bridge-related.\u003c\/li\u003e\n  \u003cli\u003eDecides Expo managed, Expo prebuild, or bare workflow on the actual native capability or constraint forcing the decision, never \"bare to be safe.\"\u003c\/li\u003e\n  \u003cli\u003eTunes FlatList performance (getItemLayout, keyExtractor, windowSize) or recommends a FlashList migration only after profiling with Flipper or the React DevTools Profiler.\u003c\/li\u003e\n  \u003cli\u003eRoutes JS-only fixes to CodePush or Expo Updates and native changes to a full store build, stating which bucket a change falls into before promising a same-day OTA fix.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use it\u003c\/h3\u003e\n\u003cp\u003ePaste Cyprian's SKILL.md into your Claude Project Instructions (or any AI system prompt), then describe your react native cross-platform engineer problem. Works with Claude, ChatGPT, and any AI chat. Under 2 minutes to install.\u003c\/p\u003e","brand":"KissMySkills","offers":[{"title":"Default Title","offer_id":58342395805960,"sku":null,"price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1036\/1444\/7880\/files\/sw33-cyprian-react-native-cross-platform-engineer-nf.png?v=1785685145","url":"https:\/\/kissmyskills.com\/products\/cyprian-react-native-cross-platform-engineer-ai-skill","provider":"KissMySkills","version":"1.0","type":"link"}