Senior Product Engineer - Android/Kotlin

Qonto; Paris; À distance; EUR 90 000 - 120 000; Plein temps

Avantages offerts par ce poste

AI coding tools

Strong code review culture

Résumé du poste

Qonto is seeking an Android Engineer to build the mobile experience used by hundreds of thousands of European businesses. You’ll own features end-to-end, from discovery and design through rollout, in a Kotlin-based modular codebase.

You will drive technical decisions with Product, Design, Backend, and Frontend teams, raise reliability, improve performance, and mentor peers to raise engineering standards in an AI-first environment.

Qualifications

• Proficient in Android native development with Kotlin.
• Strong testing mindset (unit/UI) and clean code.
• Ability to solve problems under ambiguity and meet deadlines.
• Ability to work with AI coding tools daily.
• Collaborative communication across stakeholders.

Responsabilités

• Own features end-to-end from discovery to rollout.
• Drive technical decisions with product and backend.
• Improve reliability, performance, and test strategy.
• Tackle complex mobile challenges and real-time sync.
• Grow Android craft through code reviews and mentorship.

Connaissances

Android Kotlin

Code reviews

Mentorship

Ambiguity handling

English proficiency

Description du poste

Our mission and customers: We are creating the freedom for SMEs to succeed by delivering Europe's leading finance workspace with banking at its core, augmented by financial tools. We are proud to be rated 4.8 on Trustpilot , based on 55,000+ reviews. Our culture puts customer satisfaction at the core of what we do, as proven by our Net Promoter Score of 75 (more about our culture here ).

Our journey: Founded in 2017 by Alexandre and Steve , Qonto has grown to 1,700 Qontoers serving over 750,000 customers across 8 European countries. We have been profitable since 2023, and we are just getting started.

Our beliefs: We hire for skills and potential. With 80+ nationalities, 45% women, of which 56% of women in our leadership team, diversity isn't a program; It's who we are. We've built a discrimination-free hiring process because the best teams are built on merit.

AI at Qonto: AI is deeply embedded in how we work ( here ) - Every Qontoer gets unlimited access to the best AI tools. We want people who experiment without waiting for permission, push AI beyond the obvious, know when to trust it, and when to question it.

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.
• 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 futur