Backend Engineer - Merchant Risk Intelligence is open at SumUp in Sofia, Bulgaria. Posted on Aug 10, 2026, and still on SumUp’s careers page when we last checked, on Nov 14, 2026.
About the role
Develop new functionality and support existing services across the tribe’s codebase, primarily using Go. Contribute to the continued development of our in-house merchant risk decision framework, taking it beyond its MVP and enabling new fraud prevention, risk and compliance use cases. Design, build and maintain reliable distributed systems and backend services. Work closely with product managers, data scientists…
The opening lines of the posting. The rest is on SumUp’s careers page.
Hiring at SumUp
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