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September 11, 2026

Senior Flutter Developer

Senior • On-site

Warsaw, Poland

Quick Facts

  • Role: Hands-on Senior Flutter Developer
  • Team: Mobile R&D building Android and iOS mobile trading applications
  • Architecture: Multi-flavor / multi-brand Flutter setup
  • Schedule: Sunday–Thursday work days; Friday–Saturday days off (aligned with Israeli team)

Description

Hands-on engineering role designing and building high-quality features across Android and iOS using Flutter. You will work within an established multi-flavor architecture in a fast-moving, regulated financial environment, integrating real-time market data, charting, analytics, and third-party financial SDKs.

Responsibilities

  • Software Development

    • Design, develop, test, and maintain high-quality features for Android and iOS in Flutter
    • Write clean, well-structured, testable code following team architecture, patterns, and coding standards
    • Contribute to integrations including real-time market data, charting, analytics, and third-party financial SDKs
    • Work within the existing multi-flavor / multi-brand build and release process
    • Troubleshoot and fix production issues; help keep apps performant and stable
  • Quality & Testing

    • Participate in code reviews (give and receive constructive feedback)
    • Write unit, widget, and integration tests
    • Contribute to reliability and observability (crash-free rates, performance)
  • Collaboration & Delivery

    • Collaborate with Product, Design, Backend, and QA to deliver business objectives
    • Deliver predictably within sprints with honest estimation and clear communication of progress and risks
    • Communicate proactively and clearly in English with a distributed, cross-country team

Requirements

  • 5+ years of professional software development experience
  • 4+ years of hands-on Flutter development on production applications (Flutter as a primary, day-to-day skill)
  • Strong command of Dart and modern state management (BLoC, Riverpod, Provider)
  • Solid working experience with multi-flavor / multi-environment Flutter apps
  • Working knowledge of native Android and iOS: build configuration and platform-channel / SDK integration
  • Experience with REST APIs and real-time communication (WebSocket or similar)
  • Strong ownership, autonomy, and problem-solving skills
  • Excellent written and verbal English (daily communication with the Israel-based team)
  • Availability to work Sunday–Thursday aligned with the Israeli team (must)

Benefits

  • Supportive, well-organized, and fair workplace
  • Benefits package shared during interviews
  • Glassdoor reviews available

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