Global digital transformation company with a team of more than 4,900 professionals across 26 countries—Europe, America, and Asia—working together to position organizations at the forefront of innovation by combining talent, knowledge, and technology. Our approach emphasizes conscious technology, creating positive environments and meaningful opportunities. VASS assists large companies in their digital transformation by developing and executing innovative and scalable projects from strategy to operations. Our growth is driven by talented people, a passion for innovation, and a continuous pursuit of improvement, always in our own way, making the complex simple.
The role :
Senior Flutter Developer
Location: VASS SPAIN offices. Join a team of open-minded and personable professionals. We seek a Senior Flutter Developer with proven experience in designing, developing, and maintaining cross-platform mobile applications (iOS and Android) using Flutter. The ideal candidate is technically skilled with a strong focus on software quality, performance, scalability, and clean architecture. UX/UI design will be handled by a separate team, so this role focuses exclusively on technical implementation and development.
Responsibilities:
* Design and implement scalable, maintainable mobile applications using Flutter.
* Apply clean architecture principles and robust design patterns (Clean Architecture, MVVM, BLoC).
* Consume web services (REST, GraphQL) and integrate with backend systems.
* Optimize app performance and ensure a smooth user experience.
* Write and maintain unit, integration, and functional tests.
* Participate in technical planning, effort estimation, code reviews, and retrospectives.
* Collaborate with the UX/UI team, who will deliver ready-to-implement designs.
Technical Requirements:
* Strong proficiency in Flutter and Dart.
* Hands-on experience with advanced State Management (BLoC, Riverpod, Provider, etc.).
* Solid understanding of REST API consumption and authentication mechanisms.
* Experience publishing apps to Google Play and the App Store.
* Proficient in setting up and maintaining CI/CD pipelines (Fastlane, Codemagic, GitHub Actions).
* Strong Git skills and practical experience with GitFlow branching strategy.
Nice to Have:
* Familiarity with Firebase services (Firestore, Auth, Push Notifications, Crashlytics).
* Experience using GraphQL.
* Knowledge of automated testing frameworks: flutter_test, mockito, integration_test, patrol test.
* Experience developing custom plugins or integrating native code (Swift/Kotlin).
* Understanding of mobile security best practices: OWASP, Secure storage, biometrics, encryption.
What we can offer:
* Remote work from anywhere in Spain
* Official training and certifications
* Development plan for your career
* Top-notch equipment
* 23 days of vacation + 5 conciliation days
* Long weekends
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