Working Student Software Engineer (Flutter) (m/f/d)

Maple Tales builds reading and language-learning apps that real schools use every day. A Flutter-based reading app for elementary students, a teacher dashboard, and a white-label language-learning platform running under several school brands. We're a small team, so this isn't a shadowing role: you'll ship real fixes and features into production apps, work directly with the founders, and see your work reach classrooms within days, not sprints. Tasks Ship features and fixes across our Flutter apps, including our student reading app, language-learning app, and teacher dashboard, on both mobile and web. Maintain and extend our white-label language-learning codebase that powers several branded language schools. Work directly with Firebase, from Firestore data and Authentication flows to Hosting deploys and Remote Config. Help us build a real CI/CD deployment pipeline. We already lint and test in GitLab CI. Deployment is still manual today, and we want you to help us change that. Test across browsers, devices, and branded instances to catch inconsistencies before our schools do. Review code, pair with the team on harder bugs, and contribute to technical decisions. Help us understand how students actually use Maple Tales. Instrument new features, analyze user journeys, and turn what we learn into product improvements. Prototype new reading and language-learning experiences and help turn the promising ones into production features. Improve our automated testing and monitoring so we catch regressions before our students and schools do. Build reusable components and internal tooling that make it faster to ship features across our apps and white-label brands. Requirements Enrolled student in Computer Science (Informatik), Business Informatics (Wirtschaftsinformatik), or a related field, available for roughly 20 hours per week during the semester. Based in Germany and legally eligible to work in Germany as a working student. Ideally, you are based in Frankfurt am Main or the surrounding area. Solid hands-on experience with Flutter and Dart, or strong cross-platform mobile development experience and the motivation to get fluent quickly. Familiar with state management patterns. We use BLoC, but experience with comparable approaches is absolutely fine. Experience with Firebase, or a transferable background with another BaaS or cloud platform, particularly authentication, document databases, and hosting. Enough web fundamentals, including HTML, CSS, and the DOM, to debug how Flutter Web actually renders. It has its own quirks. Comfortable with Git and collaborative development workflows. Experience with GitLab is a plus. Comfortable taking ownership of a problem, asking the right questions, and figuring things out without needing every step predefined. You know how to debug systematically and chase root causes rather than just symptoms. When something is "flaky," you want to understand why before you fix it. Fluent in English and comfortable working in an Englis