Hamburg, Germany <p>We’re looking for a Senior Full-Stack Engineer to help us build and scale AIDAR, a live product used by music professionals to discover new artists. You’ll work across the stack, with a strong focus on backend systems, data, and product-driven features.</p> <p>In this role, you’ll take ownership of features end-to-end, contribute to technical decisions, and help evolve a production system as it grows in complexity and usage.</p> <p>Responsibilities - Build and maintain backend services and APIs (primarily Python) - Work with PostgreSQL, data models, and application logic - Contribute to data pipelines and ML-supported recommendation features - Collaborate on user-facing functionality together with the Flutter frontend - Improve system architecture, performance, and reliability - Work closely with the founders on product and technical direction</p> <p>We’re looking for someone who is comfortable taking ownership and working across different parts of the system.</p> <p>You should have</p> <ul class="simple"> <li>Strong experience with Python in production environments</li> <li>Experience building and maintaining backend services and APIs</li> <li>Solid understanding of databases and data modeling (PostgreSQL or similar)</li> <li>Comfort working across the full stack, including collaboration with frontend</li> <li>Interest in data-driven or ML-supported systems (hands-on ML experience is a plus, not a requirement)</li> <li>Ability to work independently, make pragmatic decisions, and manage your own work</li> </ul> <p>Nice to have</p> <ul class="simple"> <li>Experience with Flutter or mobile frontends</li> <li>Background in startups or small teams</li> <li>Interest in music, creative tools, or recommendation systems</li> </ul>