android developer for secure messaging

BWI GmbH ensures the digital future-readiness, reliable IT operations, and digitalization of the German armed forces.

• Design and develop central, complex features for BundesMessenger using Kotlin and modern Android frameworks;
• Shape and design a robust, scalable, and secure Android application architecture;
• Provide technical support to the team on complex technical issues and promote active knowledge sharing;
• Establish and implement high standards for code quality, unit/UI testing, and security;
• Act as a technical contact and sparring partner for product management, architects, and other teams.

• Have extensive, proven experience in native Android development with Kotlin, Jetpack Compose, Android Views, and Java;
• Have experience designing and implementing complex app architectures, such as MVVM, MVI, and Clean Architecture;
• Possess deep knowledge of Android frameworks, concurrency with Coroutines/Flows, memory management, and mobile databases such as SQLite;
• Apply high standards for Clean Code, automated unit/UI tests, and CI/CD processes;
• Demonstrate a strong understanding of mobile security, encryption, and secure data storage;
• Have experience with Rust in combination with Kotlin/Java, for example via JNI or UniFFI;
• Nice to have: experience with the Matrix protocol and end-to-end encryption.

• Compensation ranges from 71.000 € to 104.040 €; the actual amount depends on the area of responsibility, experience, and competencies;
• 30 Days of annual leave plus 1 traditional holiday, with options for individual adjustments;
• Monthly credit through a benefits app and additional tax benefits on public transport tickets;
• Flexible working options, including mobile work and trust-based working hours;
• Individual professional and personal development measures;
• Free access to LinkedIn Learning;
• Bicycle leasing for up to 2 bicycles.