Senior Mobile App Developer (Kotlin)

At Cyclad, we work with top international IT companies to help them deliver cutting-edge technologies that shape the future. The project is an IT service with a 100% remote work model based in Wrocław, Poland.

• 7+ years of professional software development experience, including significant experience with Android mobile applications
• Expert-level knowledge of Kotlin and modern Android development practices
• Strong experience with Kotlin Multiplatform is preferred
• Experience with Swift development may be considered where Kotlin Multiplatform experience is limited
• Strong knowledge of the Android SDK and Jetpack components
• Hands-on experience with Kotlin Coroutines and Flow
• Strong understanding of MVVM and modern mobile application architecture
• Experience building scalable, secure, and maintainable enterprise-grade mobile applications
• Strong experience integrating mobile applications with REST APIs and backend services
• Good understanding of authentication, authorization, and mobile security
• Deep knowledge of mobile application performance optimization, monitoring, and troubleshooting
• Experience implementing accessibility and usability best practices
• Hands-on experience with testing frameworks such as JUnit and Espresso
• Experience with UI automation testing tools
• Experience working in Agile, Scrum, or SAFe environments
• Ability to collaborate effectively within complex, cross-functional teams
• Excellent communication skills in English
• Ability to work independently and collaboratively in an international environment
• Flexibility to participate in meetings during US working hours

Nice to have:

• Experience with WebView development and integration
• Experience integrating third-party identity providers such as Microsoft Entra, Auth0, or Okta
• Understanding of OpenID Connect authentication flows
• Knowledge of FIDO2 and passkey authentication
• Experience implementing biometric authentication
• Experience developing multilingual mobile applications, including support for English and Spanish
• Knowledge of Azure, Firebase, App Center, or similar mobile/cloud platforms
• Experience working in healthcare, medtech, or other regulated industries

• Design, develop, and maintain scalable Android mobile applications using Kotlin
• Build enterprise-grade mobile solutions following modern Android development practices
• Work with Kotlin Multiplatform where applicable and contribute to cross-platform mobile development
• Utilize Android SDK and Jetpack components to develop robust mobile applications
• Implement asynchronous programming using Kotlin Coroutines and Flow
• Apply MVVM and modern mobile application architecture patterns
• Integrate mobile applications with REST APIs and backend services
• Implement secure authentication and authorization mechanisms
• Ensure mobile applications meet security, accessibility, and usability best practices
• Optimize application performance and troubleshoot technical issues
• Implement monitoring and diagnostics to ensure application reliability
• Develop and maintain automated tests using JUnit, Espresso, and UI automation tools
• Collaborate with backend developers, architects, product owners, and other stakeholders
• Participate in Agile/Scrum/SAFe ceremonies and cross-functional development activities
• Contribute to code reviews and follow modern software development practices
• Support and maintain applications throughout their lifecycle

Only candidates from Poland can apply. Flexibility to participate in occasional late meetings aligned with US working hours is required.