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Added 4 months ago
BC
BCG Platinion | Senior AI Tech Architect - AI Platforms
Boston Consulting Group (BCG)
Toronto, Ontario
- $160,000 CAD / year
- Full-time
…growing their architectural skills. You will work closely with Lead and Principal Architects, contributing to AI platform implementations that integrate large language models (LLMs), data…
Added 4 months ago
B
Senior Data Analyst, Ethics and Compliance
Bombardier
Dorval, Quebec
- Full-time
Lead the evolution of analytics for our Ethics and Compliance organization, including the development of predictive analytics and forward-looking risk indicators.
Added 4 months ago
S
Architecte en IA agentique - Intelligence Engineering / Agentic AI - Sr. Architect - Intelligence Engineering
Slalom
Montreal, Quebec
- Full-time
Développer en Python et, lorsque pertinent, dans d’autres langages afin de livrer des systèmes d’apprentissage automatique, des API, des harnais d’évaluation, des pipelines de récupération,…
Added 3 months ago
KC
IT Manager
Kepler Communications
Toronto, ON
- Full-time
…we’re committed to creating an environment where you can grow, lead, and make a global…
Added 3 months ago
C
Application Support Analyst - Assistant Vice President
Citi
Mississauga, ON
- Full-time
Shell or Python scripting ability applied to the automation of operational tasks - not just theoretical awareness, but practical, working implementation.
Added 3 months ago
TR
Manager of Research Engineering, TR Labs
Thomson Reuters
Toronto, ON · Canada, Toronto, Ontario
- Full-time
Drive the technical roadmap of the team, in partnership with product, science, and the technical lead, prioritizing initiatives that enhance product value while managing technical debt…
Added 3 months ago
Q
AI/Machine Learning Engineer (Embedded Systems, Inference Efficiency)
Qualcomm
Markham, ON
- Full-time
…push the boundaries of efficient on‑device inference. You will lead and contribute to high-impact research initiatives, understand hardware–software interactions at a fundamental level, and…
Added 3 months ago
M
Principal Data Scientist
Mastercard
Toronto, ON
- Full-time
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…
Added 2 months ago
Senior Software Developer
Bentley Systems
Vancouver, BC · Toronto, ON
A Senior Software Developer, Subsurface Information Management is responsible for the end-to-end design, development, and release of high-performance platform services and APIs that enable…
Added 2 months ago
Software Developer (Research)
DRW
Montreal, QC
Spin up rapid analyses in Python/Jupyter to assess signal quality, and turn what you find into system improvements.
Added 2 months ago
O
Digital IC Designer
onsemi
Waterloo, ON
- Full-time
…technologies solve the world’s most complex challenges and lead the way in creating a safer, cleaner, and smarter world. We develop low-power mixed-signal SoCs that sense and connect the…
Added 2 months ago
E
Technical Lead / Senior Developer - Software Development
EY
Victoria, BC
- Full-time
As a Technical Lead or a Senior Consultant, you will be responsible for leading the design, development, and delivery of scalable enterprise applications. This role combines deep hands-on…
Added 4 months ago
TN
Senior Cloud Engineer
The Nationwide Group
Markham, Ontario
- $130,000 to $145,000 CAD / year
- Full-time
Lead the cloud and DevOps function, providing technical direction, setting standards and best practices, mentoring engineers, and managing team priorities, professional development, and…
Added 4 months ago
C
Senior Data Engineer
ClickUp
Canada
- Full-time
…shape how we think about reliability, scalability, cost, and developer experience at the platform…
Added 4 months ago
S
Agentic AI Architect - Intelligence Engineering (Toronto)
Slalom
Toronto, Ontario · Greater Toronto Area, Canada
- Full-time
Build in Python and, where useful, other languages to deliver machine learning systems, APIs, evaluation harnesses, retrieval pipelines, agent workflows, and production services
Added 4 months ago
TN
Developer Manager (Java)
The Nationwide Group
Markham, Ontario
- $145,000 to $165,000 CAD / year
- Full-time
The Developer Manager (Java) will lead a team of software developers in designing, building, and maintaining robust Java-based applications and APIs that power TNG’s fintech platforms.…
Added 4 months ago
KC
Satellite Systems Designer - Analysis & Support (Contingent)
Kepler Communications Inc.
Toronto, Ontario
- Full-time
…we’re committed to creating an environment where you can grow, lead, and make a global…
Added 4 months ago
KC
Senior Satellite Systems Designer - Platform Architect (Contingent)
Kepler Communications Inc.
Toronto, Ontario
- Full-time
…we’re committed to creating an environment where you can grow, lead, and make a global…
Added 4 months ago
MN
Senior Sales Operations Analyst - Ottawa
March Networks
Ottawa, Ontario
- Full-time
Lead the development and continuous improvement of commission/sales reporting, dashboards, and analytics that inform strategic decision-making at all levels of the organization
Added 3 months ago
L
Customer Success Application Engineer
Litmus
Remote, Canada
- Full-time
- Remote
Lead assigned technical implementation activities and ensure contracted technical responsibilities are delivered successfully.
Added 1 month ago
Senior Manager, Unsecured Lending Models
Scotiabank
Toronto, ON
Lead the periodic monitoring, recalibration and maintenance of models and analytic tools.
Added 2 months ago
EI
Manager, Manufacturing Test
Ecolab Inc.
Calgary, AB
- Full-time
As the Manufacturing Test Manager, you will lead the manufacturing test team, developing and implementing robust test strategies to ensure the quality and reliability of our products. This…
Added 3 months ago
E
Manager, Manufacturing Test
Ecolab
Calgary, AB · CAN-Calgary Plant Starfield
- Full-time
As the Manufacturing Test Manager, you will lead the manufacturing test team, developing and implementing robust test strategies to ensure the quality and reliability of our products. This…
Added 4 months ago
WI
Actuarial Expert - Pricing Modelling
Wawanesa Insurance
Montreal, Quebec
- Other
…modelling decisions, help shape future modelling priorities, and lead high-impact projects that support the development of efficient, accurate, and maintainable modelling…
Added 4 months ago
P
Full Stack Engineer II
Procurify
Remote, Canada
- $116,000 to $129,000 CAD / year
- Full-time
- Remote
…services to responsive, user-friendly frontend components - using Python/Django and…

Mastercard

Principal Data Scientist

Toronto, ON, Canada

Full-time

Apply About employer

Applications open in a new tab.

Job details

Job type: Full-time
Education: Master’s degree
Posting language: English
Posted: Jul 30, 2026

Original job description

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 ScientistOverview:

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.

Responsibilities:

Leading Engineering Culture
• 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.

Product Impact
• 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.
• Monitor and continuously improve deployed models to ensure accuracy, reliability, and compliance in a regulated financial environment.

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.
• Review and oversee code, models, and engineering components developed by the team to maintain enterprise-grade standards.

Innovation & Thought Leadership
• 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.
• Incubate prototypes and proofs-of-concept to evaluate new methods before scaling into production.

All About You:

• Proven experience leading data science teams and delivering enterprise-scale AI/ML solutions.
• Deep expertise in supervised, unsupervised, and generative AI methods, with strong 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.

Nice to Have:
• Experience in payments, FinTech, or consumer transaction data.
• Prior patents or publications in AI/ML.
• Demonstrated success applying GenAI or multi-agent systems in production environments.

#AIMastercard 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 reasonable_accommodation@mastercard.com 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.

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: $154,000 - $247,000 CAD

Apply About employer

More about this job

Responsibilities

Lead the development and delivery of advanced AI and machine learning solutions to enhance consumer purchase experiences and reduce chargebacks. Mentor a high-performing data science team while partnering with business leaders to align technical initiatives with product strategy.

Requirements

Requires a Master's degree (PhD preferred) and proven experience leading data science teams in delivering enterprise-scale AI/ML solutions. Candidates must possess deep expertise in generative AI, NLP, or computer vision, along with proficiency in Python, SQL, and cloud-based data environments.

Skills

Data Science
Artificial Intelligence
Machine Learning
Python
SQL
Spark
Azure ML
Snowflake
NLP
Computer Vision
Generative AI
Data Governance
Leadership
FinTech
Model Development

Benefits

Discretionary annual incentive program

Visa sponsorship

Not detected in the job text

Keywords

Data Science
Artificial Intelligence
Machine Learning
Generative AI
NLP
Computer Vision
Python
SQL
Spark
Azure
Snowflake
FinTech
Chargeback Reduction
Data Governance
Multi-agent Systems
Model Deployment
Predictive Modeling
Technical Leadership
Product Strategy
Cloud Computing

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