May 26, 2026
Mid/Senior Flutter Developer
Senior • Remote
Gliwice, Poland
Join an agile product team to rapidly develop a high-profile mobile application that bridges the gap between the Travel and iGaming sectors. The application serves as a unified platform allowing users to book hotel stays, exchange casino chips, and manage integrated customer loyalty services. You will build clean, high-performance features, integrate platform-specific SDKs, and ensure production-readiness for a fast-approaching summer launch window.
Details
Start Date: Early June 2026.
Duration: ~3 months (Until early September 2026, with potential extensions based on client review).
Capacity: Full-time (FTE).
Openings Available: 3x Flutter Developers.
Seniority: Mid+ / Senior.
Rate: Based on candidate experience and expectations.
Responsibilities
Mobile Feature Development: Implement responsive, fluid user interfaces and cross-platform workflows in Flutter and Dart.
Architecture Implementation: Write clean, modular, and testable code adhering to Clean Architecture guidelines.
State & Data Management: Architect robust application flows utilizing modern state management patterns and asynchronous data streams.
Native Integration: Develop custom native plugins or bridge native SDKs (Android/iOS) to enhance the core Flutter application.
App Store Management: Oversee and configure build tools, automation dependencies, and the deployment lifecycle for Google Play and the Apple App Store.
Requirements
Core Experience: Minimum 3 years of commercial experience in mobile application development.
Flutter Ecosystem: Expert knowledge of Flutter & Dart, including deep familiarity with RxDart, Futures, Streams, flutter_hooks, get_it, and dio.
Native Foundations: Hands-on experience with native Android SDK and/or iOS SDK development.
Architecture: Strong mastery of architectural patterns such as MVVM, MVI, or BLoC.
Build Systems: Clear understanding of platform-specific configuration and build tools (Xcode/SPM, Gradle).
Testing: Practical experience writing reliable Unit Tests.
Languages: Professional fluency in both Polish and English (minimum B2).
Nice to Have
Proven experience writing proprietary native SDKs or custom open-source Flutter plugins.
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Gdynia, Poland
18,500 - 25,000 PLN/hr
🏢 Summary: Short-term contract for an experienced Mobile Developer to build and maintain cross-platform mobile applications using Flutter for Android and iOS. The role focuses on delivering high-performance, responsive apps with strong architecture and best practices. The project runs until the end of June in an international environment. 🗂️ Requirements: Commercial experience as Mobile Developer (regular or senior level), Strong hands-on experience with Flutter, Experience with Android development, Experience with iOS development, Knowledge of mobile application architecture, Experience in building, testing and releasing mobile apps, Ability to work independently, English proficiency minimum B2 📃 Skills: Flutter, Android, iOS, Dart, Mobile, Git, CI/CD 🏢 Description: Salary: 800 - 1000 PLN/MD + VAT (B2B) Remote: elastic hybrid from Gdynia Why choose this offer? Opportunity to work with an international client from the safety/technology sector The international work environment will give you the opportunity to interact with the English language on a daily basis The Jit community will bring you a nice time during regular integration meetings Project We are looking for a Mobile Developer (Flutter + Android / iOS) who will join to our client operating in the safety and risk management industry for a short-term project running until the end of June. You will be responsible for developing and maintaining mobile applications across both platforms, ensuring high performance, responsiveness, and a seamless user experience. Expected competences and knowledge Proven commercial experience as a Mobile Developer (regular to senior level) Strong hands-on experience with Flutter and Android / iOS development Solid understanding of mobile application architecture and best practices Experience in building, testing, and releasing mobile applications Ability to work independently and take ownership of tasks Strong problem-solving skills Good communication skills in English - min. B2 level Technologies you'll work with Flutter Android / iOS About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.