Senior Frontend Engineer - Mobile

4+ years of professional front-end development 2+ years building production React Native apps (iOS and Android) Strong TypeScript skills with modern patterns Experience with Reanimated: shared values, worklets, gesture handlers Track record shipping polished, production-quality mobile apps Experience debugging platform-specific issues Understanding of mobile performance optimization Sports betting, gaming, or fintech experience (Nice to Have) Canvas-based graphics experience (React Skia or similar) (Nice to Have) Real-time data architecture (WebSocket management, GraphQL subscriptions) (Nice to Have) React Native Web / multi-platform experience (Nice to Have) Design system tooling (Storybook, visual regression testing) (Nice to Have) Payment integration experience (IAP, 3DS verification) (Nice to Have) E2E mobile testing experience (Nice to Have)

Build and ship features for sportsbook, casino, and fantasy apps using React Native Implement complex UI: market layouts, betting slips, player props, lobby experiences Create physics-based animations and gesture-driven interactions Work with canvas-based graphics for player cards, game visualizations, and dynamic effects Contribute to our theme-based design system with 100+ shared components Build and maintain WebSocket subscriptions for live odds, match updates, and user notifications Implement state synchronization between real-time streams and local stores Handle deep linking from push notifications, attribution links, and web referrals Integrate payment flows: in-app purchases, bank transfers, card entry with verification Debug and fix platform-specific issues across iOS, Android, and web Optimize performance: animation frame rates, render efficiency, memory management Write worklet functions for animation-thread execution Maintain E2E automation tests and contribute to CI/CD pipelines