Senior/Staff Backend Engineer - remote friendly
🌏 Location: You can choose to work in Qonto as long as you're living in (or willing to relocate to) either Germany, France, Italy, Serbia, or Spain.
Mission: Join us as a Backend Engineer to build the financial infrastructure that 600,000+ European SMEs depend on every day, from highly scalable APIs to robust banking services that handle real money, in real time, with zero room for mistakes.
➡️ As a Backend Engineer at Qonto, you will
- Design, build, deploy, and maintain services handling real financial transactions, owning reliability in production, not just at merge time
- Co-own service architecture, resilience, and scalability with respect to Domain-Driven Design principles
- Grow in technical leadership: lead design discussions, anticipate risks, and mentor less experienced engineers
- Drive continuous improvement, from fixing flaky CI to running post-mortems and propagating learnings across the team
Our primary languages are Go and Ruby. Our platform runs on a Kubernetes cluster hosted on AWS, with PostgreSQL as our database of choice. We're also using Kafka for event-driven architecture and ELK for logging and auditing, among many other tools and services.
➡️ What you can expect: 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, PDCA, lets you monitor and drive continuous improvement collaboratively with your peers and manager
- Each engineer gets access to Cursor or Copilot, and we want people who use AI to raise the bar, not just to go faster
➡️ Your future team
As a Backend 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 190-strong backend engineering community within a 500- Product Engineering department, working in squad teams of 5 to 10 people alongside Product, Design, and peers from Frontend and Mobile.
➡️ About You
- Technical expertise: Strong backend engineering experience with exposure to large-scale web application architecture and real production constraints
- Stack fluency: You don't need to know our exact stack, but you transfer fast and are comfortable with similar technologies
- Quality-driven: You write tests, set up monitoring, handle incidents methodically, and do root cause analysis
- Ownership mindset: You track impact after release, flag regressions, and improve what's in your scope without being asked
- Team player: Comfortable working in squad teams with PMs, Designers, and other stacks; fluent in English
