Senior Go Backend Engineer for FinTech Scale

Qonto; Paris; Remote; EUR 90,000 - 130,000; Full time

Benefits offered by this job

AI tools access (Cursor/Copilot)

Job summary

Qonto is hiring a Backend Engineer to build the financial infrastructure used by 600,000+ European SMEs, delivering scalable APIs and real-time banking services with zero room for mistakes.

You will collaborate with cross-functional teams, own reliability in production, and mentor junior engineers while leading architectural discussions and continuous improvement initiatives.

Qualifications

• Strong backend engineering experience with exposure to large-scale web application architecture and real production constraints.
• Ability to co-own service architecture, resilience, and scalability with respect to Domain-Driven Design principles.
• Experience growing in technical leadership and mentoring engineers.

Responsibilities

• Design, build, deploy, and maintain services handling real financial transactions with production reliability.
• Co‑own service architecture, resilience, and scalability per DDD principles.
• Lead design discussions, mentor engineers, and drive continuous improvement across the team.

Skills

Backend engineering

Large-scale systems

Production reliability

Domain-Driven Design

Mentorship

CI/CD

Testing & monitoring

English communication

AI tooling

Tools

Cursor

Copilot

Job description

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 cultureputs 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 byAlexandre and Steve, the company 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 the company: 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 the company 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 the company, 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

➡️ What you can expect: our methodology, the the company 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 teamAs a Backend Engineer at the company, 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 the company's wider Backend community through our Backend Guild, where engineers share knowledge, shape technical standards, and improve developer experience across the organization.

➡️ 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 the company, 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 the company 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.------------------------------------------------------------------------------------------------------On average, our hiring process lasts 20 working days. Moreinformationon our candidate journey here

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🔒 Your security matters to us

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