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SeniorFull-timeTypeScriptReactGraphQLCI/CD
Salary Range
$86,190 - $116,610 /year
This salary is estimated based on similar roles. The actual salary may vary.
About the Role
Betr is looking for a Senior Frontend Engineer to join their mobile team. You'll build React Native and TypeScript applications powering their Sportsbook, Social Sweepstakes Sportsbook, Arcade, and Casino products across iOS, Android, and web.
Key Responsibilities
- →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 their 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
Requirements
- ✓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
