Senior Software Engineer - React Native

Summary

Join Kraken's Frontend Engineering team and build high-performance mobile applications using React Native and TypeScript. As a key member, you will design, develop, and maintain mobile applications, lead architectural decisions, and collaborate with cross-functional teams. You will own features end-to-end, implement best practices, contribute to shared libraries, and mentor other engineers. The ideal candidate possesses 6+ years of software development experience, including 3+ years with React Native, and a deep understanding of JavaScript/TypeScript. This is a fully remote position.

Requirements

• 6+ years of experience in software development, with at least 3+ years focused on React Native
• Deep knowledge of JavaScript/TypeScript and React Native's core principles and APIs
• Experience building and shipping cross-platform apps for both iOS and Android
• Familiarity with React Navigation, Redux Toolkit, MobX, or other state management libraries
• Experience integrating with RESTful APIs and WebSockets
• Proficiency with mobile testing frameworks (e.g., Detox, Jest, React Native Testing Library)
• Experience working with native modules or bridging native code (iOS/Android) when needed
• Understanding of mobile UX patterns, accessibility, and responsive design principles
• Excellent collaboration and communication skills across engineering, design, and product teams

Responsibilities

• Design, develop, and maintain high-quality mobile applications using React Native and TypeScript
• Lead architectural decisions and implementation of scalable, performant mobile features
• Collaborate closely with backend engineers, product managers, and designers to deliver seamless mobile user experiences across iOS and Android
• Own features end-to-end—from concept and prototyping to release and post-launch improvements
• Implement and uphold mobile-specific best practices around performance, navigation, accessibility, and testing
• Contribute to shared component libraries and mobile design systems
• Mentor other engineers and support code reviews, architecture discussions, and process improvements
• Optimize application performance, minimize load times, and enhance app responsiveness

Preferred Qualifications

• Experience migrating to or working with the new React Native architecture (Fabric/TurboModules)
• Familiarity with OTA update tools like CodePush or Expo EAS
• Exposure to native iOS/Android development (Swift, Kotlin, Java)
• Background in crypto, fintech, or privacy-first mobile applications
• Contributions to open source or experience with building internal developer tooling
• Understanding of mobile CI/CD and release pipelines (e.g., Fastlane, EAS, GitHub Actions)