Frontend Engineer – Mobile

Betr

. Build and ship features for sportsbook, casino, and fantasy apps using React Native .

Posted 10/27/2026full-timeRemote • CanadaMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and shipping production-quality mobile applications using React Native, with a strong focus on performance optimization, complex user interfaces, and real-time data integration. Proficient in TypeScript and experienced in implementing animations and maintaining CI/CD pipelines.

Highest-signal resume keywords

React Native DevelopmentTypeScript ProficiencyMobile Performance OptimizationWebSocket IntegrationAnimation Implementation

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Front-End DevelopmentProduction Mobile AppsComplex User InterfacesPhysics-Based AnimationsCanvas-Based GraphicsState SynchronizationDeep LinkingPayment Flow IntegrationDebugging Platform-Specific IssuesEnd-to-End Automation Testing

Tools & Technologies

ReanimatedCI/CD PipelinesIOS DevelopmentAndroid Development

Industry Keywords

SportsbookCasino AppsFantasy AppsReal-Time StreamsUser Notifications

Tech Stack

Tools & technologies

AndroidiOSReactReact NativeTypeScript

About the role

Key responsibilities & impact

Build and ship features for sportsbook, casino, and fantasy apps using React Native
Implement complex user interfaces, including market layouts, betting slips, player props, and lobby experiences
Create physics-based animations and gesture-driven interactions
Build canvas-based graphics for player cards, game visualizations, and dynamic effects
Contribute to a 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, including in-app purchases, bank transfers, and verified card entry
Debug and fix platform-specific issues across iOS, Android, and web
Optimize animation frame rates, render efficiency, and memory management
Write worklet functions for animation-thread execution
Maintain end-to-end automation tests and contribute to CI/CD pipelines

Requirements

What you’ll need

4+ years of professional front-end development
2+ years building production React Native apps for iOS and Android
Strong TypeScript skills with modern patterns
Experience with Reanimated, including shared values, worklets, and gesture handlers
Track record shipping polished, production-quality mobile apps
Experience debugging platform-specific issues
Understanding of mobile performance optimization

Benefits

Comp & perks

Remote-first: Work from anywhere in Canada
High-impact ownership of significant features
Technical work with real-time systems, hardware-accelerated graphics, and physics-based animation
Opportunity to work across sportsbook, casino, and fantasy verticals
Growth opportunities through expansion into new states and product lines