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Mastercard

Lead Data Scientist

SalaryCA$127k – CA$203k
LocationToronto, Canada
Typefull-time
SeniorityLead
DepartmentCyber and Intelligence Solutions
Company size10,000+ people
First seenSep 27, 2026 · 2w ago
Verified live1d ago
At a glanceSummarised by Seekless from the posting.
Must have8
Proven experience working with stakeholders to deliver state-of-the-art solutions that adhere to their requirements.
Record of accomplishment in learning and applying new techniques and data analysis languages.
Experience writing complex queries to efficiently extract and manipulate large amounts of data.
Experience with Python and Spark for data manipulation is required.
Experience preparing presentations for management/clients that present insights clearly and efficiently.
Subject matter expertise in payments, cards, and /or fraud or proven ability to learn and master new subject matter areas.
Ability to combine knowledge across multiple disciplines to solve problems.
Excellent inter-personal skills, able to work with colleagues remotely as well as in-person.
Nice to have3
Hands-on experience designing, building, or deploying agentic AI systems, such as LLM-based agents that plan, use tools, and execute multi-step tasks autonomously, is strongly preferred.
Familiarity and experience with UNIX highly desired.
Degree in quantitative discipline preferred (e.g., Mathematics, Statistics, Physics, Computer Science, Decision Science or Engineering).
Eligibility6
Abide by Mastercard's security policies and practices.
Ensure the confidentiality and integrity of the information being accessed.
Report any suspected information security violation or breach.
Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.
We hire the most qualified candidate for the role.
Consider applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.
Skills
Python
Spark
UNIX
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
Lead Data Scientist
Overview:
Services within Mastercard is responsible for acquiring, engaging, and retaining customers by managing fraud and risk, enhancing cybersecurity, and improving the digital payments experience. We provide value-added services and leverage expertise, data-driven insights, and execution.
The Cyber and Intelligence Solutions team is responsible for innovation, development and management of our products and services to address evolving risk and security needs for all of Mastercard’s customers across the world including Banks, Merchants, Fintechs and of course consumers.
The Lead Data Scientist will be a key contributor in helping Mastercard develop and deliver actionable insights and products to help issuers, acquirers and merchants reduce fraud.
Responsibilities
What will you do?
-You will be a key player in helping Mastercard extract value from existing data sources in order to better understand, detect and prevent fraud.
-Use your data science expertise and skills to analyze worldwide fraud data to gain insights regarding fraud.
-Apply modeling techniques to identify and understand fraud to protect the MasterCard payment network.
-Build and manage new fraud related products and services that will provide value to our customers and increase revenue.
Requirements
All about you:
-Proven experience working with stakeholders to deliver state-of-the-art solutions that adhere to their requirements.
-Record of accomplishment in learning and applying new techniques and data analysis languages.
-Experience writing complex queries to efficiently extract and manipulate large amounts of data.
-Experience with Python and Spark for data manipulation is required.
-Hands-on experience designing, building, or deploying agentic AI systems, such as LLM-based agents that plan, use tools, and execute multi-step tasks autonomously, is strongly preferred.
-Experience preparing presentations for management/clients that present insights clearly and efficiently.
-Familiarity and experience with UNIX highly desired.
-Subject matter expertise in payments, cards, and /or fraud or proven ability to learn and master new subject matter areas.
-Ability to combine knowledge across multiple disciplines to solve problems.
-Excellent inter-personal skills, able to work with colleagues remotely as well as in –person.
-Degree in quantitative discipline preferred (e.g., Mathematics, Statistics, Physics, Computer Science, Decision Science or Engineering).
Legal
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. We hire the most qualified candidate for the role. 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] and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.
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;
•
Ensure the confidentiality and integrity of the information being accessed;
•
Report any suspected information security violation or breach, and
•
Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.
Benefits
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. This posting reflects one or more current openings on our team.
Pay Ranges
Toronto, Canada: $127,000 - $203,000 CAD
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