React Native Engineer

Stack

Responsibilities

• ▹Develop and maintain high-performance React Native applications across iOS and Android
• ▹Configure and manage bare React Native projects (without Expo), integrating native modules using JSI & Bridge
• ▹Build reusable and responsive mobile UI components with native code and CSS/SCSS styling
• ▹Implement key mobile features such as push notifications, in-app purchases, and OAuth 2.0 authentication
• ▹Integrate and optimize third-party native modules, ensuring seamless communication between JavaScript and native code
• ▹Manage iOS and Android environments using Xcode and Android Studio, handling build processes and deployments via TestFlight and Google Internal Release
• ▹Configure and maintain iOS schemes and Android build variants to support multiple environments
• ▹Identify and resolve performance bottlenecks in JavaScript and native code using debugging tools
• ▹Ensure smooth animations and interactions with Reanimated 2.0+, managing application state with Redux and react-redux
• ▹Implement unit and end-to-end testing using Detox and Jest
• ▹Work closely with QA teams to diagnose and fix issues in live applications

Requirements

• ▹Proven experience working with bare React Native projects (without Expo)
• ▹Strong expertise in Native Module integration, JSI & Bridge, and debugging across native and JavaScript layers
• ▹Deep understanding of Xcode and Android Studio, including iOS schemes and Android build variants
• ▹Experience with app signing and deployment to TestFlight and Google Internal Release
• ▹Advanced knowledge of React 16.0+, including hooks, class components, and React Navigation 5.0+
• ▹Familiarity with implementing In-App Purchases, Push Notifications, OAuth 2.0, and Reanimated 2.0+

Nice to have

• ▹Previous experience in iGaming or online gambling
• ▹Experience with end-to-end testing using Detox and unit testing frameworks
• ▹Knowledge of gesture handling with react-native-gesture-handler
• ▹Experience integrating analytics tools such as AppsFlyer, Mixpanel, or Google Analytics
• ▹Familiarity with libraries like react-native-webview, react-native-config, and react-native-mmkv
• ▹Proficiency with utilities like dayjs for date and time manipulation

About the company

Fliff unpacks sports gaming into a social, free-to-play experience where users can compete for leaderboard positions, earn badges, and build their status, featuring sweepstakes promotions and loyalty rewards.