Remote Mobile App Engineer: iOS/Android & React Native

Fyerx; Poland; Remote; PLN 180,000 - 280,000; Full time

Job summary

FyerX is seeking a skilled Mobile App Developer to architect, build, and deploy scalable native or cross-platform apps for internal projects and client transformations. Remote work with collaboration across time zones.

You will work with React Native, Flutter, Swift, and Kotlin; integrate RESTful APIs, manage CI/CD, and ensure performance, security, and robust offline support while coordinating with design and backend teams.

Qualifications

• 3+ years of professional mobile app development experience with a proven track record of building and publishing complex applications on iOS and Android platforms.
• Advanced expertise in mobile UI/UX principles, state management (Redux, Provider, BLoC), and handling device-specific APIs (camera, geolocation, push notifications).
• Solid hands-on experience with mobile CI/CD tools (Fastlane, Bitrise), offline storage solutions (SQLite, CoreData, Realm), and performance profiling.
• Strategic problem-solving skills with an uncompromising focus on writing clean, modular, scalable, and comprehensively documented code.
• Strong organizational, time-tracking, and project management skills; ability to handle multiple mobile development projects simultaneously, meet tight deadlines, and coordinate effectively with remote tech and design teams.

Responsibilities

• Architect, develop, and deploy scalable, high-performance native or cross-platform mobile applications for FyerX's internal initiatives and diverse client tech transformations.
• Build dynamic, accessible mobile user interfaces using modern frameworks (like React Native or Flutter, Swift, or Kotlin), ensuring seamless cross-device compatibility and optimized battery/memory performance.
• Collaborate closely with UI/UX designers, back-end engineers, and product managers to translate complex business requirements and Figma prototypes into secure, high-performing mobile solutions.
• Integrate robust RESTful APIs, third-party SDKs, and enterprise platforms to ensure seamless data synchronization and offline capabilities within the mobile environment.
• Implement mobile security best practices, maintain code versioning (Git/GitHub), oversee app store deployment pipelines (App Store Connect, Google Play Console), and conduct rigorous automated testing to minimize app crashes.

Skills

Mobile app development

iOS & Android publishing

State management Redux/Provider/BLoC

Code quality & documentation

Tools

React Native

Flutter

Swift

Kotlin

Fastlane

Bitrise

SQLite

CoreData

Realm

Git/GitHub

App Store Connect

Google Play Console

Job description

FyerX is seeking a skilled Mobile App Developer to architect, build, and deploy scalable native or cross-platform apps for internal projects and client transformations. Remote work with collaboration across time zones.

You will work with React Native, Flutter, Swift, and Kotlin; integrate RESTful APIs, manage CI/CD, and ensure performance, security, and robust offline support while coordinating with design and backend teams.