Senior Data Scientist/ML Engineer - Financial Crime

About the role

As a Senior Data Science/ML Engineer in the Risk AI Engineering Squad, you will build production systems that turn machine learning into reliable, explainable transaction-monitoring capabilities. You will work across the full model lifecycle, including data exploration, feature engineering, model training, deployment at scale, and performance monitoring. This role focuses on building robust, production-ready software while staying close to the data and models that support financial crime detection.

Responsibilities

• Own and evolve end-to-end batch training pipelines for transaction-monitoring models.
• Build reliable software around the model lifecycle, including testing, CI/CD, versioning, deployment, monitoring, and rollback.
• Improve the maintainability, observability, and scalability of model pipelines.
• Build, maintain, and improve ML models for transaction monitoring, balancing detection quality, operational efficiency, and regulatory expectations.
• Engineer features that reflect AML and Fraud typologies and suspicious behaviours.
• Define and track meaningful model and operational metrics, including detection performance and investigator outcomes.
• Produce model cards, technical documentation, and other ML governance artefacts.

Required skills

• Python
• ML pipelines
• CI/CD
• Data engineering
• Model deployment
• Production monitoring

Nice to have

• PySpark
• Distributed data-processing
• AML
• Fraud detection
• Unsupervised learning
• Anomaly detection
• Clustering
• Feature stores
• Model registries

Benefits

• Virtual Stock Option programme
• Annual learning budget
• Corporate pension scheme
• 28 days paid leave
• Urban Sports Club subsidy
• Kita placement assistance
• Subsidised office lunches
• 1-month sabbatical after 3 years of service

About the Company

SumUp empowers small businesses across the globe by providing simple and affordable tools that allow them to thrive. Today, over 4 million businesses in 37 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships.