Senior Flutter Mobile Engineer — Shape Modern Mobile Apps

loyaltykey; København; On-site; DKK 700,000 - 900,000; Full time

Benefits offered by this job

Health insurance

Career development

Dynamic team

Job summary

Loyalty Key, a Nordic leader in digital loyalty solutions for the financial sector, seeks a Senior Mobile App Developer to own and modernise mobile apps using Flutter while integrating with native iOS and Android codebases.

You will shape technical direction, contribute to architecture decisions, and work hands-on on existing apps in a 45-person IT team based in Copenhagen. Residence and work permit in Denmark are required.

Qualifications

• Proven track record in mobile app development.
• Strong Flutter and Dart expertise.
• Experience with native iOS and/or Android development.
• Understanding of mobile app architectures, APIs and integrations.

Responsibilities

• Own and evolve mobile apps, including architecture decisions and code quality.
• Collaborate with IT and stakeholders to plan migrations toward Flutter-based solutions.
• Publish and maintain apps on Apple App Store and Google Play.
• Ensure maintainability, scalability and production readiness of mobile solutions.

Skills

Flutter

Dart

Native iOS

Native Android

Mobile architecture

APIs

CI/CD

Automated testing

Monitoring

Mobile security

Job description

Loyalty Key, a Nordic leader in digital loyalty solutions for the financial sector, seeks a Senior Mobile App Developer to own and modernise mobile apps using Flutter while integrating with native iOS and Android codebases.

You will shape technical direction, contribute to architecture decisions, and work hands-on on existing apps in a 45-person IT team based in Copenhagen. Residence and work permit in Denmark are required.