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# Backend Engineer

- **Company:** Qonto
- **Location:** Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Web Applications, Backend, Front End Software Development
- **Published:** September 5, 2026
- **Apply:** https://startup.jobs/senior-staff-backend-engineer-remote-friendly-qonto-2288986

## About the Role

* 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

## Description

* 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., * 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