Senior React Native Developer (mobile apps)

OneRail Poland is a company working on industry-leading technology shaping the future of logistics. The office is located in Kraków, Poland. The company offers a flexible hybrid work style and flexible employment types.

• 6+ years of experience in mobile apps development, focusing on efficiency optimization and code reuse.
• Strong commercial experience with React Native and the React ecosystem.
• Experience with state management (Redux, MobX, Zustand, or similar).
• Familiarity with React Navigation and deep linking.
• Experience integrating APIs (REST, GraphQL) and handling offline data (AsyncStorage, SQLite, Realm).
• Understanding of app lifecycle management, background tasks, and push notifications.
• Experience with platform-specific integrations (camera, geolocation, local storage).
• Understanding of mobile security best practices.
• Familiarity with mobile app design principles and UI/UX best practices.
• Familiarity with publishing to App Store and Google Play.
• Understanding of cloud services (AWS, GCP, or Azure).
• Experience with data persistence.
• Experience with Agile methodologies and CI/CD practices.
• Strong problem-solving skills and ability to work in a fast-paced environment.
• Excellent communication and collaboration skills.
• Advanced proficiency in English, both written and spoken (B2+).

• Design and develop advanced mobile applications using React Native.
• Integrate APIs (REST, GraphQL).
• Implement modern UI/UX designs with pixel-perfect precision across iOS and Android.
• Write clean, modular, well-tested code following architecture patterns and best practices typical for mobile apps development.
• Identify and resolve performance bottlenecks, memory leaks, and UI glitches.
• Implement native modules and platform-specific integrations (camera, geolocation, push notifications, local storage).
• Participate in code reviews, testing, and debugging to ensure high code quality and reliability.
• Assist in automating deployment processes and improving CI/CD pipelines.
• Stay updated with industry trends and emerging technologies to continuously improve the platform.