Senior/Staff - Go Backend Engineer

Our mission ? Creating the freedom for SMEs to succeed in business and beyond, by delivering Europe's leading finance workspace. We combine business-class tools (seamless invoicing, spend management, and pre-accounting) with unwaveringly attentive 24/7 support, designed to help businesses breeze through all things finance. Our journey: Founded by Alexandre and Steve in July 2017, Qonto has rapidly gained trust, serving over 600,000 customers. Thanks to our wonderful team of 1,600+ Qontoers, we also made it to the LinkedIn Top Companies French ranking Our values: Customer focus | Prioritize customers in everything you do Ownership | Own your part, get things done Teamwork | Make (team)work easy Mastery | Continuously raise the bar Integrity | Always do what's right, and respect people Our beliefs: At Qonto, we're committed to fostering a welcoming environment where everyone can thrive. We prioritize evaluating applicants based solely on skills and potential, ensuring diversity with 55% international team members, 44% women, and 20% parents. Join us in building a workplace that celebrates diversity and individuality. Discover the steps we took to create a discrimination-free hiring process. 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, 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 a team 450-strong Product Engineering  department, organized into cross-functional teams (CFTs) across five domains: • Customer Lifecycle , focusing on