Data Science Data Science Senior Data Scientist (Python) (Remote)

Our PurposeMastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.Title and SummarySenior Data ScientistWho is Mastercard?Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential.With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.The Financial Crime Solutions Data Science team is looking for a Senior Data Scientist to join the team and help develop, deploy, and support machine learning solutions that prevent financial crime across the global payments ecosystem.This role is primarily focused on Account-to-Account (A2A) fraud, scam, and mule detection, helping financial institutions identify and stop increasingly sophisticated forms of financial crime. They thrive in environments where learning, adaptability, and ownership are valued and where data science is expected to deliver tangible outcomes.RoleIn this position, you will:- 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.- All About YouEssential- Experience developing, evaluating, and deploying machine learning models in a commercial environment.- Strong proficiency in Python for data science and machine learning.- Ability to apply scientific thinking and sound analytical approaches to solve complex problems.- A customer-focused mindset and an interest in understanding how data science creates real-world value.Desirable- Experience with PySpark and distributed data processing.- Experience building machine learning solutions for fraud, scams, mule detection, or broader financial crime use cases.- Knowledge of the Account-to-Account (A2A) payments ecosystem.- Familiarity with modern software development and model deployment practices.- Experience working with payment, banking, or financial services data.Corporate Security ResponsibilityAll activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:Abide by Mastercard’s security policies and practices;Report any suspected information security violation or breach, andComplete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.AI & DataEmployment type: Full time