Senior / Staff Backend Engineer - remote friendly

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 1,600+ Qontoers serving over 600,000+ 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.
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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, Portugal, or Spain.

Join us as a Backend Engineer to craft polished user experiences, highly scalable APIs and robust banking services, all to help create the finance solution all businesses love.

As a Backend Engineer, you will be part of a team of 180 highly skilled back-end engineers from all over the world. You will work closely in cross-functional teams to shape our finance solutions. You will also take part in the direction of our banking product, manage how we will handle our ever-growing user base needs, and deliver high-quality products in a fast-paced environment.

‍‍ As a Backend Engineer at Qonto, you will

• Design, develop, deploy and maintain new and existing applications to reach the team’s goals and to meet the stakeholders’ needs

Produce and ship high-quality, well-documented code

• Co-own our services architecture, resilience, scalability and robustness, with respect to Domain-Driven Design principles
• Grow on technical leadership & mentorship of other engineers

Our primary languages are Go and Ruby for backend, EmberJS for frontend, and Kotlin and Swift for our mobile apps. Our platform runs on a Kubernetes cluster hosted on AWS, with PostgreSQL as our database of choice. We're also using Kafka for our event-driven architecture and ELK for logging and auditing, among many other tools, services, and applications.

What you can expect: our methodology, the Qonto Way

• We highly value the analysis phase on software delivery. We're putting a heavy emphasis on upfront technical designs, team reviews, and smart slicing. You can expect to focus on quality, which we believe drives the velocity our customers need.
• We think success comes from a space where you're given time, support, and autonomy to improve yourself, our systems and our processes. Our lean toolbox enables you to monitor your constant improvements (Kaizen, PDCA) in a collaborative way with your peers and manager.
• Our engineers, working in cross-functional teams, dedicate themselves to one feature at a time.
• We value the efficiency and productivity of our engineers: that’s why we provide each of our engineers with licenses for Cursor or Copilot, enabling them to focus on what they do best – coding innovative solutions

Your future team
As a Backend Engineer at Qonto, you'll join one of our mission-based teams, typically made up of 5 to 10 engineers and led by a dedicated Engineering Manager.
You'll work alongside backend, web, iOS, and Android engineers, as well as Product Managers and Designers, joining either:
A Product team, building and operating features used directly by customers.
A Platform team, developing and maintaining the scalable foundations that help Product teams move faster.
Your team owns a clear mission end-to-end. You'll contribute to discovery, make technical decisions, build and release solutions, monitor production performance, and steadily raise quality standards, following our "you build it, you own it" approach.
Beyond your immediate team, you'll stay connected with Qonto's wider Backend community through our Backend Guild, where engineers share knowledge, shape technical standards, and improve developer experience across the organization.

About You

• Experience: As a software engineer, you have solid experience in working on user-facing products and have had exposure to architectural patterns of large, high-scale web applications
• Problem solver: You are a pragmatic and product-driven engineer, with an interest in solving problems and delivering value to customers;
• Impact maker: You want to help build an innovative …