Senior Data Scientist — Fraud & Financial Crime ML

Mastercard Inc.; Greater London; Vor Ort; GBP 90.000 - 130.000; Vollzeit

Zusammenfassung

Mastercard is seeking a Senior Data Scientist to join the Financial Crime Solutions team, developing and deploying ML solutions to prevent fraud in the global payments ecosystem. You will focus on Account-to-Account fraud, scams and mule detection, delivering measurable value to customers.

The role requires strong Python skills, experience with large-scale datasets, and the ability to communicate complex results to diverse audiences.

Qualifikationen

• Experience developing, evaluating, and deploying ML models in a commercial environment.
• Strong proficiency in Python for data science and machine learning.
• Experience working with structured and large-scale datasets.
• Ability to explain technical concepts and results to a variety of audiences.
• Curiosity and a willingness to challenge assumptions, learn new approaches, and continuously improve solutions.
• Ability to work independently while collaborating effectively across teams.
• A customer-focused mindset and an interest in understanding how data science creates real-world value.

Aufgaben

• Configure, validate, and deploy machine learning models to customers around the world.
• Conduct Proof-of-Value exercises with customers to demonstrate model performance and business impact.
• Contribute to the research, development, and evaluation of new fraud, scam, and mule detection solutions.
• Support and improve production models as customer needs and fraud patterns evolve.
• Partner with Product, Customer Delivery, and Data Science colleagues to enhance our solutions and deliver greater customer value.
• Analyse complex datasets to identify opportunities for improved detection performance and customer outcomes.
• Contribute to a culture of learning, continuous improvement, and practical problem solving.

Kenntnisse

ML model development

Python

Data analysis

Communication

Independent work

Cross-functional collaboration

Problem solving

Tools

PySpark

SQL

Jobbeschreibung

Mastercard is seeking a Senior Data Scientist to join the Financial Crime Solutions team, developing and deploying ML solutions to prevent fraud in the global payments ecosystem. You will focus on Account-to-Account fraud, scams and mule detection, delivering measurable value to customers.

The role requires strong Python skills, experience with large-scale datasets, and the ability to communicate complex results to diverse audiences.