Senior Data Scientist

Build and maintain ML models for transaction monitoring at SumUp.

• •Join the AI AML Engineering Squad at SumUp to build and maintain ML models for transaction monitoring.
• •Key Responsibilities Build, maintain, and improve ML models and batch training pipelines for AML transaction monitoring.
• •Engineer Feature Store features mapped to AML typologies and suspicious behaviours.
• •Run sensitivity tests on synthetic datasets, produce ML governance artefacts, and deliver audit-ready documentation.
• •Own and evolve the AML Risk Score by analysing driver contributions, monitoring drift, running back-testing, and recommending improvements.
• •Partner with AML Operations, Product, and Engineering to translate stakeholder needs into actionable, scalable data science solutions.
• •Requirements Strong Python skills with hands-on data engineering experience and a proven track record of building reliable, production-grade ML workflows.
• •Experience in feature engineering and unsupervised machine learning, with the ability to translate domain knowledge into model behaviours and alerting logic.
• •Proven ability to productionalise ML applications and operate end-to-end pipelines, including monitoring, versioning, and rollback in regulated environments.
• •Comfort working across complex, multi-source data ecosystems where data quality, lineage, and root-cause analysis require careful attention.