Our Purpose Mastercard 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 Summary Principal Data Scientist Overview: Mastercard is seeking a Principal Data Scientist to lead the development and delivery of advanced AI and machine learning solutions for Mastercard's Ethoca product that enhances consumer purchase experiences. This is a senior technical role, responsible for defining the data science product design, guiding execution across multiple business initiatives, and ensuring solutions are delivered at scale to support chargeback reduction, dispute resolution, and consumer clarity. The successful candidate will combine technical depth with strong cross-functional skills to drive measurable business impact.

Design and execute the data science vision and roadmap for the product enhancement, aligning technical initiatives with business priorities and product strategy. Lead, mentor, and inspire a high-performing data science team, fostering a culture of technical excellence, innovation, and collaboration. Partner with product, engineering, and business leaders to shape requirements and deliver data-driven capabilities that improve customer experience and reduce disputes.

Build and scale AI/ML models that enrich merchant data, enhance transaction clarity, and reduce chargeback/dispute rates. Guide the design and implementation of solutions that leverage generative AI,



multi-agent systems, NLP, and computer vision to enhance purchase experiences. Technical & Operational Excellence Provide hands-on technical leadership in model development, deployment, and governance across cloud environments (Azure, Snowflake, Spark).

Ensure compliance with Mastercard's data governance, security, and privacy requirements. Drive exploration of cutting-edge technologies, including generative AI and agentic frameworks, to strengthen the product offering and Mastercard technical competence.

Represent

Mastercard's AI leadership through patents, publications, conference presentations, and academic partnerships. Proven experience leading data science teams and delivering enterprise-scale AI/ML solutions. Deep expertise in supervised, unsupervised, and generative AI methods, with solid understanding of their mathematical foundations.

Hands-on background in NLP, information extraction, or computer vision or multi-modal AI applied to real-world business challenges. Strong track record of translating complex data problems into scalable, measurable business outcomes. Proficiency in Python, ML frameworks (Scikit-learn, PyTorch, TensorFlow), SQL, Spark, and Azure ML/Snowflake.

Experience working in highly regulated industries, with an emphasis on data governance and compliance. Skilled at engaging with senior stakeholders, presenting technical results to diverse audiences,



and driving alignment across functions. Master's degree required; PhD preferred.

Experience in payments, FinTech, or consumer transaction data. Prior patents or publications in AI/ML. AI Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.

In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact [email protected] not include any medical or health information in this email.

Corporate Security Responsibility

All 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, and Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines. In line with Mastercard's total compensation philosophy and assuming that the job will be performed in Canada, the successful candidate will be offered a competitive pay based on location, experience and other qualifications for the role and may be eligible to participate in a discretionary annual incentive program.

Pay Ranges Toronto, Canada: $154,000 - $247,000 CAD we give them data and insights. Corporate purchasing is complicated; we help create them. Small businesses are virtual; Retailers want to fight fraud;

📌 Data Scientist - Fulltime (Toronto)
🏢 Mastercard
📍 Toronto