Requirements: English, German
Company: Kyotu Technology
Region: Gdansk , Pomeranian Voivodeship
B2B | Remote (EU-based) | Full-time | Long-term project | Start: June 2025
We are looking for an experienced Android Native Developer to join our international team working on secure digital identity and authorization systems for a German public sector project. You will help develop modern, secure, and user-friendly Android applications that handle sensitive user data and implement advanced authentication protocols.
This is a long-term engagement in a regulated environment with a strong focus on privacy, cryptography, and compliance. Youll work as part of a stable, cross-functional team including backend developers, UX/UI designers, QA, and DevSecOps engineers.
Project overview
- Development of secure mobile applications for digital identity management
- Implementation of cryptographic protocols and secure communication features
- Collaboration with a multidisciplinary international team
- Long-term public sector project (23 years, with a strong likelihood of extension)
- Remote work from within the EU, with occasional on-site visits in Germany
- Planned start date: June 2025
Responsibilities
- Design and development of native Android applications using Kotlin or Java
- Implementation of authentication and authorization functionality
- Development of secure storage and communication modules (e.g. BLE, NFC)
- Integration of biometric authentication and secure hardware features
- Close collaboration with UX/UI teams to deliver accessible, intuitive interfaces
- Implementation of testing processes including unit, UI, and integration testing
- Participation in code reviews and application of security best practices
- Contribution to the continuous improvement of the development process
Requirements
- Minimum 3 years of experience in native Android development using Kotlin or Java
- Proficiency in Android Studio, Gradle, and ADB
- At least 12 months of experience with Material Design and Jetpack Compose
- Solid knowledge of native Android APIs, including:
- TEE/StrongBox for secure key storage
- BLE (Bluetooth Low Energy)
- NFC communication
- OMAPI (Open Mobile API)
- BiometricPrompt
- Experience with testing tools such as Espresso and Appium
- Understanding of cryptographic techniques and secure communication standards
- Familiarity with Git-based development workflows
- Proficiency in both German and English (minimum B2 level)
Nice to have
- Experience with UI design tools such as Figma
- Familiarity with identity protocols: OAuth2, OpenID Connect, SAML
- Knowledge of FIDO standards and verifiable credentials
- Experience with JWT and digital identity frameworks
- Understanding of eIDAS regulations and compliance requirements
- Previous experience publishing apps to the Google Play Store