Senior Flutter Mobile Developer

3 days ago

Stockholm, Stockholm, Sweden Zyax Full time

We are developing innovative, customer-centric applications that integrate mobile devices with access control systems, including door locks and other security solutions. Our technology seamlessly connects users with hardware through cloud services and local control mechanisms, such as Bluetooth.

To support our growing product ecosystem, we are looking for a highly skilled Flutter Developer to join our team. You'll play a key role in building intuitive, performant, and secure mobile applications while collaborating with designers, product owners, backend developers, and embedded engineers.

About you

As a Senior Flutter Developer, you will develop feature-rich mobile applications that enhance access control and security. You'll work closely with stakeholders to ensure a seamless user experience, integrating both backend APIs and Bluetooth communication for local device control. Your expertise in mobile device development will help shape our product's performance, security, and reliability.

This is a great opportunity for someone who thrives on solving complex problems in mobile ecosystems, particularly those involving real-time data, Bluetooth/Matter communication, and IoT integration.

Responsibilities
  • Develop and maintain mobile applications using Flutter and Dart for both iOS and Android platforms
  • Implement features that integrate both backend APIs and local hardware control via Bluetooth (BLE)
  • Optimize app performance, ensuring smooth UX even in resource-constrained environments
  • Ensure secure data handling, including user authentication, encryption, and device permissions
Communication
  • Work closely with product owners and designers to deliver user-centric applications with intuitive interfaces
  • Collaborate with embedded developers to enable reliable communication between mobile apps and hardware devices
  • Participate in sprint planning, feature prioritization, and product roadmap discussions
  • Provide technical insights and recommendations to improve both product and process
Testing and quality assurance
  • Implement robust testing strategies, including unit, widget, and integration tests
  • Collaborate with QA to ensure apps meet high performance, usability, and security standards
  • Identify and resolve bugs, performance bottlenecks, and edge cases
Qualifications

Flutter Expertise:

  • Minimum 3 years of professional experience developing mobile applications using Flutter and Dart
  • Proficiency in creating custom widgets, animations, and state management (Provider, Riverpod, or BLoC patterns)
  • Strong understanding of Flutter's platform channels for integrating with native iOS and Android code
  • Proven experience building high-performance, user-friendly mobile applications
  • Familiarity with mobile app architecture patterns (MVC, MVVM, Clean Architecture)
  • Expertise in Bluetooth (BLE) communication and local device control integration
  • Strong grasp of secure mobile app practices, including data protection and API security
  • Experience integrating mobile apps with RESTful or GraphQL APIs
  • Familiarity with offline-first designs, data caching, and real-time synchronization

Cross-platform Deployment:

  • Experience with CI/CD pipelines for mobile apps (e.g., GitHub Actions, Fastlane)
  • Knowledge of app store submission processes and mobile platform guidelines (App Store and Google Play)
Seniority Level

Mid-Senior level

Employment Type

Full-time

Job Function

Engineering and Information Technology

Industries

IT Services and IT Consulting

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