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September 3, 2026

Senior Mobile App Developer (Kotlin)

Senior • On-site

Copenhagen, Denmark

This role demands experienced professionals to contribute to a significant mobile application project. The focus is on delivering high-quality profiles with immediate availability.

Main Responsibilities

  • Design and develop robust Android mobile applications using Kotlin.
  • Collaborate with cross-functional teams to integrate backend services.
  • Implement best practices for app performance and user experience.
  • Optimize and troubleshoot mobile applications for stable performance.
  • Conduct code reviews and mentor junior developers.
  • Ensure compliance with security and privacy standards.
  • Participate in Agile development processes.

Key Requirements

  • 7+ years of software development experience focused on Android mobile applications.
  • Expert-level knowledge of Kotlin and modern Android development practices.
  • Strong understanding of Android SDK, Jetpack components, and MVVM architecture.
  • Experience with scalable and secure enterprise-grade mobile applications.
  • Proficiency in REST APIs and mobile security protocols.
  • Ability to optimize app performance and enhance user experience.
  • Familiarity with JUnit and UI automation testing frameworks.
  • Experience in Agile/Scrum methodology in complex environments.
  • Knowledge of Azure, Firebase, or similar platforms is advantageous.
  • Preferred US location or flexibility to attend late meetings with a US team.

Nice to Have

  • Experience with webview integration.
  • Knowledge of third-party identity provider integrations.
  • Familiarity with multi-language application setups.

Start date: ASAP
Duration: 3 months + potential option for extension

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