Android Developer (Senior and Regular)

<h3><strong>Project description:</strong></h3><p>We are building a next-generation <strong>Installation Management System</strong> 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.</p><p>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:</p><ul><li><p>A <strong>centralised web portal</strong></p></li><li><p>A <strong>native Android mobile application</strong> used by field technicians</p></li></ul><p>The system will be fully integrated with an existing Reading System and will serve as the <strong>single source of truth</strong> for device and structural data, improving data consistency and operational efficiency across the organisation.</p><h3><strong>Tech stack:</strong></h3><ul><li><p>Native Android (Java, Kotlin, Android SDK)</p></li><li><p>.NET, React.js / Next.js</p></li><li><p><strong>Database:</strong> PostgreSQL</p></li><li><p><strong>Cloud:</strong> Microsoft Azure</p></li></ul><h3><strong>Requirements:</strong></h3><ul><li><p>Strong experience in <strong>Android development</strong> using <strong>Java and Kotlin</strong></p></li><li><p>Solid knowledge of <strong>Android SDK</strong> and Android Studio</p></li><li><p>Experience building <strong>native Android applications</strong></p></li><li><p>Hands-on experience with offline data handling and synchronisation, camera APIs and barcode scanning</p></li><li><p>Understanding of mobile performance and memory constraints</p></li><li><p>Ability to work with applications requiring <strong>at least 100 MB of storage</strong></p></li><li><p><strong>Polish:</strong> Proficiency at <strong>B2 level or higher</strong> is required.</p></li><li><p><strong>English:</strong> Proficiency at <strong>B1 level</strong> is required.</p></li></ul><h5><strong>Nice to Have:</strong></h5><ul><li><p>Experience with enterprise or field-service applications</p></li><li><p>Familiarity with backend systems and APIs</p></li><li><p>Understanding of security concepts in mobile applications</p></li></ul><h3><strong>Main responsibilities:</strong></h3><ul><li><p>Develop and maintain a <strong>native Android application</strong> using Java and Kotlin</p></li><li><p>Implement offline-first functionality with reliable data synchronisation</p></li><li><p>Integrate device features such as: camera (photo documentation), barcode scanning, and electronic signatures</p></li><li><p>Ensure application compatibility with <strong>Android 9.0 and above</strong></p></li><li><p>Optimize performance and stability for field usage</p></li><li><p>Collaborate with backend and frontend teams to ensure smooth system integration</p></li><li><p>Contribute to improving usability for non-technical field users</p></li></ul>