Betr

Senior Frontend Engineer – Mobile

Betr

full-time

Posted on:

Location Type: Remote

Location: Canada

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Job Level

Senior

Tech Stack

AndroidGraphQLiOSReactReact NativeTypeScript

About the role

  • 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 (carousel pagers, radial controls, animated transitions)
  • 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

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
  • Nice To Have:
  • Sports betting, gaming, or fintech experience
  • Canvas-based graphics experience (React Skia or similar)
  • Real-time data architecture (WebSocket management, GraphQL subscriptions)
  • React Native Web / multi-platform experience
  • Design system tooling (Storybook, visual regression testing)
  • Payment integration experience (IAP, 3DS verification)
  • E2E mobile testing experience
Benefits
  • Remote-First: Work from anywhere in Canada

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
React NativeTypeScriptWebSocketcanvas-based graphicsE2E automation testingperformance optimizationpayment integrationreal-time data architectureReanimateddebugging