Senior React Native Engineer

Description

• Fliff unpacks sports gaming into social, free-to-play games and provides a flagship social sportsbook with sweepstakes promotions and loyalty rewards.

• Senior React Native Engineer to help build and scale mobile experiences for the Fantasy platform.

• Join a cross-functional Fantasy team focused on delivering high-performing, user-friendly applications across mobile and desktop.

• Design, develop, and maintain responsive, performant mobile applications using ReactJS and TypeScript.

• Implement scalable, reusable UI components with CSS/SCSS.

• Build seamless experiences across mobile and desktop devices, iOS and Android.

• Collaborate with engineers, designers, product managers, and QA to deliver high-impact features.

• Integrate REST APIs and WebSocket services into the frontend.

• Optimize for performance, maintainability, and reliability.

• Review code, share feedback, and mentor junior engineers.

• Debug and troubleshoot frontend issues using modern developer tools.

Requirements

• 5+ years of experience in frontend development, with a focus on React Native.

• Strong proficiency with JavaScript (ES6+) and TypeScript 5.0+, including utility types, generics, and advanced type safety.

• Deep understanding of React fundamentals, React 16.0 or higher.

• Solid experience integrating REST APIs with tools like fetch and axios.

• Experience and understanding of GraphQL and Apollo Client.

• Working knowledge of WebSockets (native or Socket.IO).

• Proficiency in debugging with Reactive Tools from XCode + Profiler and Android Studio + LogCat.

• Testing experience with Jest and React Testing Library.

• Integration with Sentry or other crash analytics tools.

• Heavy usage of analytic tools (DataDog, MixPanel, Google Analytics, etc).

• Knowledge of ESLint, and formatting tools like Prettier.

• Experience of UI design tools like Figma, Sketch, or Zeplin.

• Understanding and knowledge of Native Package Managers (CocoaPods for iOS and Gradle for Android).

• Strong communication skills and a proactive, ownership-driven mindset.

• Interest and experience in the sports betting or fantasy sports industry.

• Nice to have: Experience using Storybook for documenting components.

• Nice to have: Exposure to Detox for end-to-end testing.

• Nice to have: Knowledge of Reanimated Library.

• Nice to have: Experience with chat integration.

Benefits

• The annual salary for this role ranges from $180,000 to $200,000 depending on experience and background.

• Unlimited/ Flexible Time Off: Flexible vacation policy.

• Health benefits with 100% paid premiums* for medical, dental, and vision plans for employees and dependents, plus on-demand healthcare concierge.

• Pre-tax savings plans for healthcare, with up to a $500 annual employer contribution to the HSA (if enrolled in the HSA medical plan).

• Employee-sponsored 401(k) to help reach your financial goals.

• Fully remote work environment.

• Generous parental leave.

• Professional development opportunities in a dynamic, global setting.

• Work Remotely.

• $500 work-from-home stipend + Equipment & Accessories.

• A supportive, collaborative, and knowledge-driven workplace.

• An engaging and challenging role with the freedom to innovate and develop effective solutions.

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