April 9, 2026

Mid Flutter Engineer

Mid • Remote

140 - 165 PLN

Warsaw, Poland

Mid Flutter Engineer (B2B Contract)

We are looking for a mid-level Flutter Engineer who can take ownership of mobile feature delivery within a product-driven environment. This role requires a balance between hands-on development, understanding of mobile architecture, and the ability to work independently within an experienced team.

About the project

You will join a product-focused team building and scaling a cross-platform mobile application used across multiple international markets.

  • 100% Flutter-based application (no legacy, no migration)

  • Active product with ongoing feature development

  • Close collaboration with product, design, and platform teams

  • Architecture evolving towards a modular, scalable setup to support multiple teams

Responsibilities:

  • Develop and maintain mobile features using Flutter (iOS & Android)

  • Contribute to a modular and scalable architecture

  • Integrate backend services using GraphQL and REST APIs

  • Ensure code quality through unit, widget, and end-to-end testing

  • Collaborate closely with product managers, designers, and engineers

  • Participate in the full development lifecycle: design, implementation, release, and monitoring

  • Debug and optimize app performance (rendering, networking, stability)

  • Take ownership of delivered features and propose improvements where relevant

Requirements:

  • Solid commercial experience with Flutter (Dart) in production environments

  • Experience working on live mobile applications (App Store / Google Play)

  • Ability to work independently within a team of experienced engineers

  • Good understanding of mobile architecture patterns (e.g. BLoC, Provider, Riverpod, Clean Architecture, modularization)

  • Experience integrating APIs (preferably GraphQL, plus REST)

  • Practical experience with testing (unit, widget, or E2E)

Nice to have:

  • Experience with mobile CI/CD pipelines

  • Familiarity with monitoring and analytics tools

  • Exposure to end-to-end testing frameworks

  • Experience working in product-oriented environments