Senior Software Engineer

At SumUp, we believe small merchants are the heartbeat of our communities. By joining the Lending team, you'll help keep a core credit product running for businesses across Europe and Brazil, one that's already proven, already trusted, and still has plenty of room to get better.

As a Senior Backend Engineer, you'll be a technical anchor on the Servicing squad, operating with real autonomy to challenge existing patterns rather than just maintain them. This is a role for someone who's energised by complex, live systems, comfortable owning hard trade offs between speed and stability, and excited to help scale a regulated, high stakes platform without breaking what already works.

What you'll do

• Build and maintain backend services that power SumUp's lending platform in Go
• Strengthen observability and monitoring so the team can measure system health and catch issues before they become incidents
• Write integration tests that protect the reliability of every release