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Added 56 mins ago
V
Instrument Operator Technician (6 Month Contract)
VitalBio
Oakville, ON
- Full-time
…to spot anomalies, a coder’s logic to automate tasks, and a scientist’s rigour regarding data integrity. You will ensure our devices perform reliably under the most demanding study…
Added 9 hours ago
SD
Scientist II Assay Development
Sekisui Diagnostics P.E.I. Ltd.
Charlottetown, PE
- Full-time
As a Scientist II, Assay Development, you will be an integral part of our dedicated Research & Development team. You will lead and execute scientific research and development activities…
Added 10 hours ago
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Scientist, ADA Immunogenicity
Altasciences
Laval, QC
- Full-time
We are seeking a Scientist for our Ligand Binding Department (immunogenicity Unit) located in Laval. The Scientist will be responsible for the oversight of immunogenicity study conduct from…
Added 10 hours ago
A
Senior Research Scientist, Method Development (LC-MS)
Altasciences
Laval, QC
- Full-time
We are seeking a highly motivated and experienced Senior Research Scientist with strong expertise in bioanalytical mass spectrometry to join our Method Development team. The successful…
Added 11 hours ago
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Junior Environmental Technologist/Scientist
Onterris
Calgary, AB · CAN-Alberta-Calgary
- Full-time
Junior Environmental Scientist/Technologist/Geoscientist-
Added 11 hours ago
SJ
Data Scientist
St. Joseph's Healthcare Hamilton
Hamilton, ON · Charlton Campus
- Full-time
Added 11 hours ago
TB
Food Scientist, Cannabis Beverages and Edibles
Tilray Brands, Inc.
London, ON
- $60,000 to $80,000 CAD / year
- Full-time
Reporting to the Senior Director of Manufacturing, the Food Scientist is responsible for the research and development of new cannabis consumer products for adult use, with a focus on…
Added 11 hours ago
WG
RESEARCH SCIENTIST
Whisk Group
Calgary, AB
- Full-time
Added 13 hours ago
G&
Principal Scientist, Bioanalytical R&D – LC-MS/MS Method Development
Groom & Associés / Associates
Laval, QC
- Full-time
…biotechnology research sector to recruit an experienced Principal Scientist, Bioanalytical R&D –…
Added 14 hours ago
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Software Development Engineer II, WW Prime Tech
Amazon
Vancouver, BC
- Full-time
…design the next message with a product manager and an applied scientist. You'll be in code and in reviews, digging into a latency or reliability question, and working with partner teams…
Added 15 hours ago
NR
Research Associate - Astrophotonic Instrumentation
National Research Council Canada / Conseil national de recherches Canada
Victoria, BC
- Full-time
We are seeking an instrumentation scientist or engineer who will play a lead role in the development of new astronomical instrumentation based on fiber optic and photonic chip technologies.…
Added 15 hours ago
TI
2027 Accelerated Development Program - BrainBox AI
Trane Italia
Montreal, QC
- Full-time
Added 15 hours ago
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Senior Data Scientist
Visa
Toronto, ON
- Full-time
The Sr. Data Scientist is responsible for designing and deploying AI-powered tools and agent systems that combine LLMs and custom ML models into end-to-end solutions that support business…
Added 15 hours ago
AC
Data Scientist, Commercial Price Modelling
Aviva Canada
Toronto, ON
- Full-time
As a Data Scientist on our Commercial P&C Price Modelling & Sophistication team, you'll build models and data-driven solutions that improve customer experience, support business decisions,…
Added 15 hours ago
AC
Data Scientist, Commercial Price Modelling
Aviva Canada
Markham, ON
- Full-time
As a Data Scientist on our Commercial P&C Price Modelling & Sophistication team, you'll build models and data-driven solutions that improve customer experience, support business decisions,…
Added 16 hours ago
EM
Associate Scientist / Research Scientist
E-One Moli Energy
Pitt Meadows, BC
- Full-time
Added 16 hours ago
R&
Principal Data Scientist, Agentic AI Technical Lead
Robots & Pencils
Canada
- Full-time
We're looking for a Principal Data Scientist to serve as the technical lead across an entire agentic AI program. This role is ideal for a deeply experienced data science and AI leader who…
Added 16 hours ago
AI
Lead Data Scientist
Alberta iGaming Corporation (AiGC)
AB · Greater Edmonton Metropolitan Area
- Full-time
We're looking for a Lead Data Scientist to lead the application of advanced data science and analytical methodologies to enable safe, fair, and responsible iGaming in Alberta by providing…
Added 16 hours ago
XP
Research Associate 1 or 2, Biology (12 Month Contract)
Xenon Pharmaceuticals
Burnaby, BC
- $58,100 to $81,000 CAD / year
- Full-time
The Research Associate 1 or 2, Biology will report to the Senior Research Scientist, Biology and be based out of Vancouver, BC, Canada. The level of the position will be commensurate with…
Added 17 hours ago
SC
Air Quality Scientist
SLR Consulting
Prince George, BC
- Full-time
As our new Air Quality Scientist, you will play an important role on a team whose work is essential to achieving this goal. As our business continues to expand across British Columbia and…
Added 17 hours ago
SC
Air Quality Scientist
SLR Consulting
Nanaimo, BC
- Full-time
As our new Air Quality Scientist, you will play an important role on a team whose work is essential to achieving this goal. As our business continues to expand across British Columbia and…
Added 18 hours ago
PX
Data Scientist (Machine Learning and AI)
Project X
Toronto, ON
- Full-time
3-5 years of hands-on experience as a Data Scientist
Added 18 hours ago
Software Development Engineer II, WW Prime Tech
Amazon
Vancouver, BC
…design the next message with a product manager and an applied scientist. You'll be in code and in reviews, digging into a latency or reliability question, and working with partner teams…
Added 19 hours ago
SC
Air Quality Scientist
SLR Consulting
Victoria, BC
- Full-time
As our new Air Quality Scientist, you will play an important role on a team whose work is essential to achieving this goal. As our business continues to expand across British Columbia and…
Added 19 hours ago
A(
Machine Learning Resident - Client: Publicus (12 month term)
Amii (Alberta Machine Intelligence Institute)
AB · Edmonton, AB
- Full-time
Maithrreye Srinivasan, Machine Learning Scientist and Amor Provins, Product Owner, Advanced Technology

Visa

Senior Data Scientist

Toronto, ON, Canada

Full-time

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Job details

Job type: Full-time
Posting language: English
Posted: Oct 2, 2026

Original job description

About Us
Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid.

At Visa, you'll have the opportunity to create impact at scale - tackling meaningful challenges, growing your skills and seeing your contributions impact lives around the world.

Join Visa and do work that matters – to you, to your community, and to the world. Progress starts with you.

Job Description

The Sr. Data Scientist is responsible for designing and deploying AI-powered tools and agent systems that combine LLMs and custom ML models into end-to-end solutions that support business decision-making. Beyond model development, the role involves managing recurring data processes, building predictive and forecasting models, and contributing to data infrastructure modernization.

The position requires collaborating with cross-functional teams, translating model outputs into actionable recommendations, and communicating complex concepts to diverse audiences.

Key Responsibilities:

Agentic Development: Design AI agent systems that automate analytical workflows, including data retrieval, impact analysis, and proactive recommendation generation.
Multi-Model Architecture: Decide how to combine LLMs, traditional ML models, and rule-based logic into reliable, end-to-end agent workflows, and build the orchestration layer that ties them together.
Prototyping to Production: Take agent prototypes from proof-of-concept through iteration to production-grade systems with proper documentation, testing, CI/CD, and deployment ownership.
Predictive Modeling & Forecasting: Build and maintain forecasting models and other predictive tools that feed into agent systems or support business decisions directly.
Data ETL: Monitor and maintain recurring data processes, ensuring pipelines run on time and data quality stays high.
Data Infrastructure: Contribute to modernizing the data stack by migrating pipelines, expanding data coverage, and supporting cloud migration efforts.
Collaboration & Communication: Work with teammates across regions, product, and engineering, translating model and agent outputs into clear recommendations for senior business stakeholders.

Visa requires at least 3 days in office, expectations of these days will be confirmed by your Hiring Manager.

Qualifications

Basic Qualifications:

5 or more years of relevant work experience with a Bachelor's Degree or at least 2 years of work experience with an Advanced degree (e.g., Masters, MBA, JD, MD) or 0 years of work experience with a PhD.
Experience building and deploying machine learning models to production, focusing on modular, scalable, and maintainable models.
Hands-on experience with LLMs or generative AI, with demonstrated interest or experience in building agentic or multi-model systems.
Comfortable building data pipelines and working with large-scale data using tools like Spark, Airflow, SQL, or Python.
Experience managing data science or ML projects from scoping through delivery.
Able to communicate technical work clearly to non-technical audiences.

Preferred Qualifications:

6 or more years of work experience with a Bachelor's Degree or 4 or more years of relevant experience with an Advanced Degree (e.g., Masters, MBA, JD, MD) or up to 3 years of relevant experience with a PhD.
Experience building AI agents or multi-model orchestration systems using SDKs/frameworks such as LangChain, Claude Agent SDK, OpenAI Agents SDK, or similar.
Experience with predictive modeling and time-series forecasting.
Experience with productionalizing agentic applications.
Hands-on experience with cloud platforms (AWS, GCP, or Azure).
Exposure to financial services or the payments industry is a plus.
Experience working across geographies and time zones in a global organization.

Visa is an EEO Employer

Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

Visa welcome and encourages application from persons with disabilities. Accommodations are available on request for candidates taking part in all aspects of the selection process.

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More about this job

Responsibilities

The Senior Data Scientist will design and deploy AI-powered agent systems that integrate LLMs and custom ML models into end-to-end business solutions. The role also involves managing recurring data processes, building predictive models, and contributing to the modernization of data infrastructure.

Requirements

Candidates must have at least 5 years of relevant experience with a Bachelor's degree, or equivalent experience with an advanced degree. Proficiency in building and deploying machine learning models, working with large-scale data, and experience with generative AI or LLMs is required.

Skills

Data Science
Machine Learning
LLMs
Generative AI
AI Agents
Python
SQL
Spark
Airflow
Predictive Modeling
Time-series Forecasting
CI/CD
Cloud Platforms
Data Infrastructure
Data Pipelines
Multi-model Orchestration

Visa sponsorship

Not detected in the job text

Keywords

Data Science
Machine Learning
LLMs
Generative AI
AI Agents
Python
SQL
Spark
Airflow
Predictive Modeling
Time-series Forecasting
CI/CD
Cloud Platforms
AWS
GCP
Azure
LangChain
Data Infrastructure
ETL
Payments Industry
Financial Services
Orchestration
Data Pipelines
Model Deployment
Prototyping
Business Intelligence
Cross-functional Collaboration
Scalable Systems
Data Quality
Cloud Migration

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