Senior Data Scientist/ML Engineer - Financial Crime

SumUp is hiring a Senior Data Scientist/ML Engineer for its Risk AI Engineering Squad within the Risk & Compliance tribe, building production ML systems that turn machine learning into reliable, explainable transaction-monitoring capabilities. The role spans the full model lifecycle: understanding financial-crime typologies, exploring data, engineering features, training and validating models, deploying them at scale, and monitoring performance over time. The engineer owns end-to-end batch training pipelines, builds reliable software around testing, CI/CD, versioning, deployment, and rollback, and works with risk investigators to translate domain knowledge into detection signals and calibrated thresholds. The role also involves tracking model and operational metrics, monitoring drift, running back-tests, and producing model cards and governance documentation for auditability and regulatory review. The position is based in SumUp's Berlin office under an office-first setup.