JustJoin.IT Praca zdalna Senior New

Senior Flutter Developer

Baltic Amadeus

⚲ Vilnius, Kaunas, Warszawa, Gdańsk, Kraków

Wymagania

  • Flutter
  • Dart
  • RESTful API
  • CI/CD

Opis stanowiska

Project/Client: FintechStart Date: ASAP Duration: 1 year  Language: English   Role Overview: We are looking for a Senior Flutter Developer for our fintech client to lead mobile development of a e-wallet and business finance platform, delivering secure real-time payments, account management, and merchant services. Strong Flutter & Dart expertise and experience in regulated environments is a must. Key Responsibilities: • Spearhead the architecture and delivery of sophisticated mobile features built on Flutter • Establish and uphold mobile architecture guidelines and engineering standards • Own features end-to-end, from initial design through to release and ongoing production support • Architect robust state management approaches and maintainable, modular application structures • Implement secure authentication, authorisation, and handling of sensitive user data • Partner with backend engineering teams to agree on API contracts and strengthen overall system reliability • Drive thorough code reviews and support the growth of mid-level engineers • Enhance CI/CD workflows, release procedures, and automated test coverage • Investigate and resolve complex performance issues and production incidents • Uphold compliance with applicable regulatory, security, and data protection standards • Participate actively in technical planning, effort estimation, and roadmap shaping Must-Have Requirements: • 5+ years of hands-on mobile development experience with a strong focus on Flutter & Dart • Demonstrated history of shipping production mobile applications at scale • Deep familiarity with Flutter architecture patterns including BLoC, Riverpod, Provider, and Clean Architecture • Ability to build modular, well-tested, and maintainable mobile codebases • Solid grasp of RESTful APIs, asynchronous programming patterns, and real-time data flows • Strong understanding of secure mobile development and platform-level security considerations • Hands-on experience with mobile performance analysis and optimisation techniques • Proficiency in unit, widget, and integration testing • Practical experience managing releases via App Store and Google Play • Comfortable with Git-based workflows and CI/CD tooling • Strong written and verbal English communication skills Nice to Have: • Background in fintech, payments, banking, or similarly regulated industries • Prior experience with KYC processes, payment integrations, or high-transaction systems • Familiarity with push notifications, deep linking, and secure session handling • Understanding of mobile app hardening, encryption, and anti-tampering measures • Previous experience in a mobile team lead or mentorship-focused capacity Note: We’ll be in touch only with candidates who move forward to the next stage.