Senior Fullstack Engineer - Operations Platform

About the team: As part of the Operations Platform Team within the Platform Tribe, you will contribute to building and evolving SumUp’s internal unified platform for standardized tools and backoffices that support global Operations. The team focuses on developing foundational systems and internal developer platforms that enhance operational efficiency, streamline workflows, and provide robust, flexible interfaces for product teams. As a Senior Fullstack Engineer, you will play a key role in developing scalable software systems that improve the developer experience when integrating domain-specific backoffices, while also enabling Customer Support teams to effectively assist our customers. You will work on key initiatives such as enhancing backoffice APIs, improving access management and auditing, and optimizing operational workflows. Overall, you will help design and build high-performance systems and a unified API ecosystem that enables multiple teams to independently configure and launch new operational use cases with flexible business logic—ultimately driving efficiency and delivering high-quality support to our customers. What you’ll do: Design, build, and maintain fullstack applications, with a strong focus on backend services, ensuring dependable and highly available production systems aligned with SumUp’s microservices architecture Develop and maintain scalable backend services and APIs, while also contributing to intuitive and efficient frontend interfaces Contribute to shaping a long-term strategy that enables shared business processes to be used across multiple systems, triggered by automations, events, and user interactions Write high-quality, scalable code across the stack, following Platform standards and best practices Collaborate with stakeholders to identify pain points, gather requirements, and translate them into effective fullstack solutions Work closely with Identity, Verification, Data, and Engineers across Platform and Operations teams