About the opportunityBank Core runs the systems at the heart of N26 - accounts, ledgers, and the core banking logic every other team builds on. We're revamping that core right now, so the engineers who join today shape decisions that reach across the entire company. The problems are real, the domain is deep, and the impact is direct.Our services are written almost exclusively in Kotlin on Spring Boot, deployed on Kubernetes, communicating over Kafka, backed by Postgres, and running on AWS.We lean heavily on agentic coding and expect you to do the same - but you stay in charge. You question what the tools produce, review every line, and own the result.We work with a high degree of autonomy, collaborate closely, and share what we learn.In this role, you willOwn features end to end on systems that move real money for millions of customersGo deep on the banking domain - payments, ledgers, and the rules beneath them - and use that understanding to question and sharpen what we buildDrive your own priorities within a cross-functional team,



and unblock yourself when you hit a wallRaise problems early with a proposed solution, instead of working around themShip incremental improvements and share your findings - including at our Get Stuff Done Days (GSDD)What you need to be successfulSkills:Solid grasp of microservice architectureComfortable with relational databases, Postgres preferredExperience operating in a modern cloud environment, ideally AWS and KubernetesFull professional proficiency in EnglishNice to have:Event-driven systems with KafkaPayments, ledgers, or other banking/fintech domain experienceWho you areRelentlessly curious - you want to learn new domains like payments, ledgers, and banking from the ground upProduct-driven - you understand what you're building and push back when it doesn't add upSelf-starting - you unblock yourselfYou surface issues early and bring solutions, never quietly route around themYou favor steady, incremental improvementYou share knowled

📌 Backend Engineer – Core Systems (Madrid)
🏢 EngineersOfAI
📍 Madrid