Betr - Frontend Engineer
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 • 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)
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 (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 • Real-Time & Integration • 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 • Platform & Quality • 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
Benefits
• High Impact: Own significant features that directly affect user experience and business metrics • Technical Depth: Real-time systems, hardware-accelerated graphics, physics-based animation—not just standard mobile UI • Product Variety: Work across sportsbook, casino, and fantasy verticals • Growth: Rapidly expanding into new states and product lines • Remote-First: Work from anywhere in Canada
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