Senior Flutter Developer

Global digital transformation company with a team of more than 4,900 professionals across 26 countries in Europe, America, and Asia, working together to position organizations at the forefront of innovation through talent, knowledge, and technology. Our approach emphasizes conscious technology, creating positive environments and meaningful opportunities. VASS supports large companies in their digital transformation, developing and executing innovative and scalable projects from strategy to operations. Our growth is driven by our talented team, passion for innovation, and continuous improvement, always in our own way, simplifying the complex.

The role :

We are looking for a Senior Flutter Developer for our offices in VASS SPAIN, to join a team of open-minded and personable professionals. The ideal candidate will have proven experience in designing, developing, and maintaining cross-platform mobile applications (iOS and Android) using Flutter. This role requires a technically skilled individual with a focus on software quality, performance, scalability, and clean architecture. UX/UI design will be handled separately, so this position will focus solely on technical implementation and development.

Responsibilities

1. Design and implement scalable, maintainable mobile applications using Flutter.
2. Apply clean architecture principles and robust design patterns (Clean Architecture, MVVM, BLoC).
3. Consume web services (REST, GraphQL) and integrate with backend systems.
4. Optimize app performance and ensure a smooth user experience.
5. Write and maintain unit, integration, and functional tests.
6. Participate in technical planning, effort estimation, code reviews, and retrospectives.
7. Collaborate with the UX/UI team, who will deliver ready-to-implement designs.

Technical Requirements

1. Strong proficiency in Flutter and Dart.
2. Hands-on experience with advanced State Management (BLoC, Riverpod, Provider, etc.).
3. Solid understanding of REST API consumption and authentication mechanisms.
4. Experience publishing apps to Google Play and the App Store.
5. Proficient in setting up and maintaining CI/CD pipelines (Fastlane, Codemagic, GitHub Actions).
6. Strong Git skills and practical experience using the GitFlow branching strategy.

Nice to Have

1. Familiarity with Firebase services (Firestore, Auth, Push Notifications, Crashlytics).
2. Experience using GraphQL.
3. Knowledge of automated testing frameworks: flutter_test, mockito, integration_test, patrol test.
4. Experience developing custom plugins or integrating native code (Swift / Kotlin).
5. Understanding of mobile security best practices: OWASP, Secure storage, biometrics, encryption.

What we can offer

• Remote work from anywhere in Spain
• Official trainings and certifications
• Development plan for your career
• Top-notch equipment
• 23 days of vacation + 5 conciliation days
• Long weekends