Tonsser has spent 10 years building for young football players. Now we're expanding — and we're looking for a senior Android developer to help shape what comes next. If you care about craft, move fast, and want your work to matter to millions of athletes, keep reading.
You'll join a small, focused team building a best-in-class companion app for the next generation of athletes. This starts as a 6-month freelance engagement with the clear intention of moving into a full-time position.
Senior-level Android experience — you've shipped production apps and can own decisions end to end.
Kotlin Multiplatform (KMP) — you've worked cross-platform (iOS + Android) and know where shared code helps and where it doesn't.
Jetpack Compose — comfortable building modern declarative UIs at scale.
Consumer app background — experience with video, animations, and the kind of polish that users actually notice.
AI-integrated workflow — you've used AI tools in your day-to-day and can bring that mindset to the team.
Discover exciting opportunities in biotechnology. Join innovative companies that are advancing healthcare and life sciences through cutting-edge research and development.
Salary: 74.000 € - 92.000 €
🤖 This salary estimate is calculated by AI based on the job title, location, company, and market data. Use this as a guide for salary expectations or negotiations. The actual salary may vary based on your experience, qualifications, and company policies.
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