Project description:We are building a next-generation Installation Management System designed to fully digitalise and streamline installation, replacement, and servicing processes for metering devices such as water meters, heat meters, heating cost allocators, and concentrators.The solution will replace paper-based workflows with end-to-end digital processes, including electronic protocols, automated reporting, and real-time monitoring of work orders. It will consist of: A centralised web portal A native Android mobile application used by field technicians The system will be fully integrated with an existing Reading System. It will serve as the single source of truth for device and structural data, improving data consistency and operational efficiency across the organisation.Tech stack: Native Android (Java, Kotlin, Android SDK) .NET, React.js / Next.js Database: PostgreSQL Cloud: Microsoft Azure Requirements: Strong experience in Android development using Java and Kotlin Solid knowledge of Android SDK and Android Studio Experience building native Android applications Hands-on experience with offline data handling and synchronisation, camera APIs and barcode scanning Understanding of mobile performance and memory constraints Ability to work with applications requiring at least 100 MB of storage Polish: Proficiency at B2 level or higher is required. English: Proficiency at B1 level is required. Nice to Have: Experience with enterprise or field-service applications Familiarity with backend systems and APIs Understanding of security concepts in mobile applications Main responsibilities: Develop and maintain a native Android application using Java and Kotlin Implement offline-first functionality with reliable data synchronisation Integrate device features such as: camera (photo documentation), barcode scanning, and electronic signatures Ensure application compatibility with Android 9.0 and above Optimise performance and stability for field usage Collaborate with backend and frontend teams to ensure smooth system integration Contribute to improving usability for non-technical field users