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From the employer's careers site First seen 3 Nov 2026

Sr. Data Scientist

Visa Toronto Hybrid senior full-time

The employer hasn't listed a salary.

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Description

We are seeking a Sr. Data Scientist to design and deploy AI-powered tools and agent systems that combine LLMs and custom ML models into end-to-end solutions supporting business decision-making.

The ideal candidate will have experience building and deploying machine learning models to production, focusing on modular, scalable, and maintainable models.

Key Responsibilities:

  • Design AI agent systems that automate analytical workflows, including data retrieval, impact analysis, and proactive recommendation generation.
  • 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.
  • Take agent prototypes from proof-of-concept through iteration to production-grade systems with proper documentation, testing, CI/CD, and deployment ownership.
  • Build and maintain forecasting models and other predictive tools that feed into agent systems or support business decisions directly.
  • Monitor and maintain recurring data processes, ensuring pipelines run on time and data quality stays high.
  • Contribute to modernizing the data stack by migrating pipelines, expanding data coverage, and supporting cloud migration efforts.
  • Work with teammates across regions, product, and engineering, translating model and agent outputs into clear recommendations for senior business stakeholders.

Requirements:

  • 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.
  • Experience building and deploying machine learning models to production.
  • Hands-on experience with LLMs or generative AI.
  • 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.
  • Experience building AI agents or multi-model orchestration systems.
  • Experience with predictive modeling and time-series forecasting.
  • Experience with productionalizing agentic applications.
  • Hands-on experience with cloud platforms.
  • Exposure to financial services or the payments industry is a plus.
  • Experience working across geographies and time zones in a global organization.

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

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You apply with the employer directly. Their original posting is here: https://visa.wd5.myworkdayjobs.com/en-US/Visa/job/CA---Toronto-Canada/Senior-Data-Scientist_REF088874W

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