Salary: 500 - 800 pln/md B2BWork model: elastic hybrid from Gdynia (at least 2 days per week from the office) Why choose this offer? We focus on modern technologies and a flexible approach – working in an environment where efficiency, collaboration, and autonomy matter. An organizational culture driven by innovation, transparency, and strong partnership within the team. The opportunity to work with leading brands in the e-commerce industry. A smaller organizational structure that allows for a real impact on project direction and technology decisions.  Responsibilities (Flutter / Mobile) Design and develop mobile applications (iOS / Android) using Flutter Implement user interfaces based on designs and design systems (Figma) Integrate mobile applications with backend services (REST / GraphQL APIs) Ensure high code quality, performance, and application stability Participate in mobile architecture and technical decision-making Maintain and further develop existing mobile applications Additional Responsibilities (React / Web Frontend) Develop and maintain web applications using React Implement responsive and user-friendly interfaces Collaborate on building and maintaining shared UI components Integrate frontend applications with backend services and manage application state  Competences and knowledge Flutter / Mobile Strong experience with Flutter and Dart Proven experience in building mobile applications for iOS and Android Understanding of mobile application architectures (e.g. MVVM, MVC, or similar) Experience with API integration Ability to debug, optimize, and improve mobile application performance  Frontend / React Good knowledge of React and JavaScript / TypeScript Experience with modern frontend development (hooks, state management) Solid understanding of HTML and CSS (or CSS-in-JS solutions) Nice to Have Experience with publishing applications to App Store and Google Play Familiarity with CI/CD pipelines for mobile or frontend projects Experience with testing (unit / widget / e2e) Knowledge of Material Design guidelines Experience working in Agile / Scrum product teams Basic understanding of backend systems or overall system architecture  Client – why choose this particular client from the Jit portfolio?Polish clothing company originating from Gdańsk is one of the notable examples of business success. Over more than thirty years of its existence, it has come a long way from a small local import company to a major player in the apparel market. Today, it operates in over 25 markets, runs a network of more than 2,000 physical stores, and is rapidly expanding its international e-commerce presence. In recent years, the company has been focusing its investments primarily on IT, which has become a key driver of its business growth. About Jit TeamThe 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.