Senior Backend Engineer - Global Expansion
Berlin, Berlin, Germany • Posted June 05, 2026
Role Description
Senior Backend Engineer — Global Expansion
About the team
The Global Expansion Acquiring Squad is the engine behind SumUp's growth into new markets — integrating local payment acquirers, enabling merchant onboarding, and ensuring transactions flow reliably across countries like Mexico, Canada, New Zealand, and Australia. This role sits at the heart of that mission, owning critical backend systems while also shaping how the squad works — building AI agents and developer tooling that make the entire team faster and smarter. If you're a backend engineer who wants real ownership, enjoys working in ambiguous and complex environments, and is genuinely excited about teaching AI how your codebase works (not just using it for autocomplete), this role is for you.
What you'll do
Design and build scalable backend services in Golang and Kotlin, covering merchant onboarding, transaction processing, and reconciliation across mul...
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