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Added 2 mins ago
Development Assistant
Toronto Community Housing or Toronto Seniors Housing
Toronto, ON
Added 2 mins ago
Accountant
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Experience with ERP systems (Business Central preferred) and strong proficiency in Microsoft Excel.
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Familiar with all functions of components and systems for installation
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IT - Business Systems Analyst
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$80,000 to $120,000 CAD / year
Reporting to the Senior Manager, Business Systems - IT, the Business Systems & Automation Analyst supports the improvement, reliability, and continuous development of the company's IT…
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Added 16 mins ago
Part-Time Sales Associate - Famous Footwear CAN
Famous Footwear
AB · Greater Edmonton Metropolitan Area
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Essential Functions: Other responsibilities may be performed as needed to ensure the needs of the business are met. Overtime hours may be required to meet business needs.
Added 16 mins ago
Manager, Software (Embedded & Digital Products)
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Added 16 mins ago
Director Of Construction (Civil / Industrial)
Lock Search Group
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Added 16 mins ago
Mechanic
Toromont Cat
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Adjust, repair, or replace defective parts, components, and systems using hand and power tools.
Added 16 mins ago
(CAN) Customer Service Manager
Walmart Canada
Grand Falls, NB
$15 CAD / hour
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Trains associates on systems and Company procedures, including scanning accuracy, productivity standards, company programs and initiatives, discount programs, EAS processes, and safety…
Added 16 mins ago
(CAN) Customer Service Manager
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Trains associates on systems and Company procedures, including scanning accuracy, productivity standards, company programs and initiatives, discount programs, EAS processes, and safety…
Added 17 mins ago
Principal Software Developer
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Ottawa, ON
Full-time
This position is for a Principal Software Developer - AI Integration. In this role you will be a key technical leader working on the Solace Agent Mesh: an event-driven Integration and…
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relevant data into the HRIS and other internal systems.
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Territory Sales Rep- Thomas Built Buses
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Added 17 mins ago
Mental Health Case Manager - Flexible Supports
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Added 17 mins ago
Commercial Lending Analyst II
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Support commercial real estate, diversified commercial, agricultural, small business, and other commercial lending files as assigned.
Added 17 mins ago
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Added 17 mins ago
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Visa

Senior Data Scientist

Toronto, ON, Canada

Job type: Full-time
Apply by: Nov 1, 2026
Posting language: English
Posted: Oct 2, 2026

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Applications open in a new tab.

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

Design, build, and deploy AI agent systems that combine large language models, traditional machine learning, and rule-based logic to automate analytical workflows and support business decisions. Maintain predictive models and data pipelines, contribute to data infrastructure modernization, and communicate actionable recommendations to cross-functional teams and senior stakeholders.

Requirements

Requires relevant experience based on education level, including experience deploying production machine learning models, working with LLMs or generative AI, and building data pipelines with tools such as Spark, Airflow, SQL, or Python. Candidates should be able to manage projects from scoping through delivery and explain technical work to non-technical audiences; experience with agent frameworks, forecasting, cloud platforms, or financial services is preferred.

Skills

Machine Learning
Large Language Models
Generative AI
AI Agent Development
Multi-Model Orchestration
Predictive Modeling
Time-Series Forecasting
Data Pipelines
ETL
Spark
Airflow
SQL
Python
Cloud Platforms
CI/CD
Stakeholder Communication

Visa sponsorship

Not detected in the job text

Keywords

Artificial Intelligence
Machine Learning
Large Language Models
Generative AI
AI Agents
Agentic Systems
Multi-Model Architecture
LangChain
Claude Agent SDK
OpenAI Agents SDK
Predictive Modeling
Time-Series Forecasting
Data ETL
Data Pipelines
Apache Spark
Apache Airflow
SQL
Python
Cloud Migration
AWS
Google Cloud Platform
Microsoft Azure
CI/CD
Data Quality
Data Infrastructure
Payments Technology
Financial Services
Business Decision-Making

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