Qonto

Senior/Staff Backend Engineer - remote friendly

Berlin, Germany remote Mid Salary not listed
remote Mid level Technology & IT Curated
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About the role

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, 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

At Qonto, we understand that true diversity isn’t just about ticking boxes on a hiring checklist. Apply regardless of the boxes you tick — who knows? You may have the missing piece of the puzzle we’ve been searching for all along.

 

By applying, you agree that Qonto processes your personal data to assess your application. Your data is kept for up to 2 years in our candidate pool. Read our Privacy Notice for full details.

 

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On average, our hiring process lasts 20 working days. More information on our candidate journey here

 

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🔒 Your security matters to us

Recruitment scams are on the rise. Keep in mind, we will never work with third-party platforms or agencies that request payment from candidates.

If you receive a suspicious message claiming to be from Qonto, please report it right away (

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT Finance Human Resources MySQL Remote Collaboration Mid level remote

Likely questions

  1. Tell us about work you have done that is close to the Senior/Staff Backend Engineer - remote friendly role.
  2. How would you approach your first 30 days at Qonto?
  3. Which of Finance, Human Resources and MySQL have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you stay organised and communicate clearly when working remotely?

Prepare before the call

  • A recent example that proves your experience with Finance, Human Resources and MySQL.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Senior/Staff Backend Engineer - remote friendly role because I can bring practical experience in Finance, Human Resources and MySQL, learn the team quickly, and contribute to the outcomes Qonto needs from this hire.

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