Fraud Prevention Specialist

SumUp·Berlin, Germany·Posted 21 October 2026

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About the role

Fraud Prevention Strategy Specialist Fraud Prevention team · Berlin, Germany (office-first) Team description SumUp's Fraud Prevention team protects merchants and their customers by stopping fraud across multiple markets, products and payment types, with a strong focus on Europe. As a Fraud Prevention Strategy Specialist, you'll turn data into the rules, thresholds and authentication flows that decide which payments go through, helping us reduce losses without adding friction for genuine customers. It's a role for someone who enjoys complex problems, wants real influence over how fraud prevention evolves, and likes turning changing European regulation into practical controls. What you'll do Shape fraud prevention strategy for SumUp's consumer and merchant products across global markets Analyse large datasets to spot fraud trends, performance shifts and opportunities to improve Design, configure and test decision engine rules, thresholds and authentication strategies, including Strong Customer Authentication (SCA) flows, and provide analytical input for data science models Monitor fraud, chargeback and false positive performance, then investigate root causes and recommend clear,…

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