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Senior Backend Engineer

Atlas Metrics

About the team At SumUp, we're on a mission to bring merchants and consumers closer together and help local communities thrive. Within the Consumer Mission, we're building a rewarding banking experience that connects people to the small businesses they love while tackling some of the most technically demanding challenges in fintech: critical infrastructure migrations, smooth, uninterrupted payment experiences, seamless open banking integrations, and high‑availability banking systems that can’t afford to fail – all while enabling free transactions for our merchants. This role sits at the heart of that work — you’ll take real ownership of backend services that are close to our consumers, directly shaping their everyday experience, with impact that’s visible and felt across the entire platform. What you'll do Build and maintain Backend services for Core neobanking features including bank transfers, open banking, savings accounts, and payment processing Take end-to-end ownership of features and projects, covering scoping, design, development, testing, deployment, and maintenance, leveraging Go along with Docker and Kubernetes for container orchestration. Take ownership of critical infrastructure migrations — including our banking core system transitions — without disrupting live customer experiences Collaborate closely with cross-functional teams including product, design, data science, security, and operations to understand requirements, provide technical insights, and contribute to architecture discussions that ship meaningful banking features end-to-end Support fellow developers and actively help build a collaborative, innovative engineering culture Shape technical architecture and lead code reviews, helping define and promote best practices in code quality, testing, automation, and security to raise the overall engineering bar. Build and integrate tools and systems that improve operational efficiency and reliability, with strong observability through monitoring, alerting, and hands‑on involvement in incident response and post‑mortems. You’ll be great for this role if you have… Strong proficiency in Go, Kotlin or Python, with a track record of building scalable, production‑grade backend services Experience working with cloud platforms (AWS or comparable) and container orchestration tools such as Docker and Kubernetes Solid understanding of SQL and NoSQL databases, distributed systems, and the trade‑offs that come with high‑availability requirements Comfort navigating complex, regulated environments — whether that's financial services, payments, or similarly high‑stakes domains A collaborative, product‑oriented mindset with the ability to work independently, communicate clearly, and adapt when priorities shift Any of the following would be considered a plus Previous experience in a Growth‑focused engineering team. Familiarity with the Fintech or Banking regulatory landscape. No visa sponsorship available with this position Why you should join SumUp Opportunity to work with a truly global, multicultural team from our central Covent Garden location, wrapped in historic charm and modern flair. This involves an office‑first setup Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success Generous time off: enjoy 28 days of paid leave, plus bank holidays and special leaves A dedicated annual L&D budget for attending conferences and/or advancing your career through further education Health matters: private health insurance, including optical and dental Life made easier: salary‑sacrifice commuter benefits via Gogeta Financial security: retirement scheme (SumUp matches 7% when you contribute 5%) Peace of mind: life insurance from MetLife for 2× your salary Break4me: 1-month sabbatical after 3 years of service Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited. #J-18808-Ljbffr

Vacancy posted 1 day ago
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