Scale3C

React Native Developer

Scale3C

full-time

Posted on:

Origin:  • 🇱🇹 Lithuania

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Salary

💰 €4,000 - €7,000 per month

Job Level

Mid-LevelSenior

Tech Stack

AndroidApolloGraphQLiOSJavaJavaScriptKotlinMaterial UIObjective-CReactReact NativeSwiftTypeScript

About the role

  • Build and improve the React Native mobile application, delivering fast, reliable, and feature-rich user experiences.
  • Work with GraphQL APIs using Apollo Client (or get up to speed quickly).
  • Collaborate with native modules in Android (Java/Kotlin) and/or iOS (Swift/Objective-C).
  • Develop Bluetooth-based features, including iBeacon detection and attendance scanning.
  • Design user interfaces guided by Material UI principles, ensuring smooth and intuitive workflows.
  • Optimize performance, responsiveness, and battery efficiency for real-world usage.
  • Contribute to CI/CD pipelines, write maintainable tests, review code, and support team growth through mentorship.

Requirements

  • 5+ years of professional software engineering experience.
  • 3+ years of React Native development with strong JavaScript/TypeScript expertise.
  • Experience with GraphQL and Apollo Client—or strong motivation to learn it quickly.
  • Skilled in native Android and/or iOS development (Java/Kotlin and/or Swift/Objective-C).
  • Familiarity with Material UI or comparable design systems.
  • Proficient in Git and modern CI/CD practices.
  • Strong debugging, performance profiling, and mobile architecture capabilities.
  • (Nice-to-have) Advanced expertise in mobile performance tuning and memory profiling.
  • (Nice-to-have) Experience with mobile localization.
  • (Nice-to-have) Practical Bluetooth integration experience, especially with iBeacon or BLE scanning for proximity/attendance use cases.
  • (Nice-to-have) Background in mentoring engineers or leading technical projects.
  • (Nice-to-have) Knowledge of real-time data sync strategies or offline-first mobile design patterns.