Senior Product Engineer - Android/Kotlin
Location: You can choose to work at Qonto as long as you're living in (or willing to relocate to) either Germany, France, Italy, Serbia, Portugal, or Spain.
➡️ Mission
Join us as an Android Engineer and help us build the mobile experience that 600,000+ European businesses rely on every day to manage their finances. You'll own product-critical features end-to-end — from technical design to rollout — in a large, modular Kotlin codebase where craft and velocity both matter. You'll work closely with Product, Design, Backend, and Frontend.
➡️ What you'll do
- Own features end-to-end: You'll take ownership from discovery and technical design through implementation, rollout, and iteration on features that help businesses pay, get paid, and stay in control.
- Drive technical decisions in your squad: You'll shape solutions with Product, Design, and Backend by clarifying tradeoffs across UX, performance, security, and time-to-market.
- Raise app reliability and maintainability: You'll improve architecture, performance, and test strategy to scale the app without compromising stability.
- Tackle complex mobile challenges: You'll contribute to real-time synchronization, resilience patterns, and smooth navigation in a modular codebase with ~1,000 modules.
- Grow the team's Android craft: You'll lead code reviews and technical discussions, share patterns, and mentor peers to raise the bar on quality and delivery.
➡️ What we're looking for
- Strong Android native experience: You've shipped and maintained production features with Kotlin and are comfortable owning technical decisions end-to-end.
- Quality-driven mindset: You care about testing (unit, UI, snapshot), clean code, and pragmatic standards that keep teams moving fast.
- Problem-solving approach: You thrive in ambiguity and turn complex constraints into simple, robust solutions.
- AI-native workflow: You use AI coding tools daily to amplify your output — not just experiment with them.
- Collaborative by nature: You're fluent in English and contribute through code reviews, knowledge sharing, and mentorship across technical and non-technical stakeholders.
➡️ What we can offer you
- An AI-first engineering environment: Unlimited access to Claude Code, Cursor, and Copilot — and a culture that expects you to use them to raise the bar, not just go faster (click here to read our vision statement on AI)
- Engineering standards that scale: Strong code review culture, continuous refactoring, and a focus on correctness in a regulated context.
- A technically demanding domain: Fintech constraints — security, compliance, real-time data — push you to solve problems most mobile engineers never encounter.
➡️ Our methodology, the Qonto Way
- We value upfront technical design, team reviews, and smart slicing — quality drives the velocity our customers need.
- Our org assigns one team lead per project across stacks, giving your team a clear mission and full autonomy on how it operates.
- Our lean toolbox, Kaizen and PDCA, lets you monitor and drive continuous improvement collaboratively with your peers and manager.
➡️ Our stack & practices
- Kotlin-first & modern concurrency: 100% Kotlin codebase with Coroutines + Flow throughout.
- Architecture: MVVM + Clean Architecture with modular design (~1000 modules).
- UI direction: New screens built with Jetpack Compose, with a large share of legacy views already migrated.
- CI/CD & quality: GitHub Actions, Bitrise, Firebase Test Lab, Sonar, Fastlane.
- Testing culture: 26k+ unit tests, 14k+ snapshot tests, 500+ UI tests.
Curious about how we tackle tech debt? Check out our talk from the last Droidcon here featuring Florian.
➡️ Your future team
As an Android Engineer, you will join one of Qonto's squad teams, each organised around a clear project mission, with one team lead and full ownership of a product scope. You'll be part of a 140+ mobile engineering community within a 500+ Product Engineering department, working in focused teams of 5 to 10 people alongside Product, Design, and peers from Frontend and Backend.
