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Omnicom Group

Global marketing, media, and PR network

Data Scientist - ML Engineer

Applied Machine LearningConfirmed live in the last 24 hours
Full-timeToronto, ON, CanadaCA$120k - CA$140k

About the Job

Requirements

  • Have 5 or more years of experience as a data scientist or as an engineer working with data scientists.
  • Have strong experience with algorithms and data pipelines that process terabytes of data per day.
  • Have experience taking concepts from inception through production, monitoring, and ongoing enhancements.
  • Have worked in organizations with cross-functional teams of approximately five people, collaborating on complex problems with immediate teammates and across the organization.
  • Be curious about applied large language models and agentic systems, and be comfortable using modern AI-assisted development tools such as Claude Code.
  • Be able to create and modify traditional machine-learning models, including linear regression, XGBoost, and logistic regression.
  • Be competent in training and evaluating models using mainstream data science tools, including scikit-learn, Pandas, Keras, and/or PyTorch.
  • Have experience with cloud-native machine-learning training platforms such as BigQuery ML or Snowpark.
  • Complete a background check if hired.

Responsibilities

  • Work across retail media, starting with Amazon, to understand relationships between bids, placement, conversion, and sales, and turn that understanding into systems that autonomously optimize advertising on customers' behalf.
  • Design, implement, and analyze experiments to derive actionable insights.
  • Analyze advertising performance data to improve the core strategies powering Perpetua's advertising engine.
  • Help define how machine-learning optimization works alongside the generative and agentic layer, choosing where reinforcement learning and classical optimization are appropriate and where large-language-model reasoning can improve platform planning and explanations.
  • Contribute to activities that support team growth, establish best practices, participate in recruitment, and author design documents.

Desired Qualifications

  • Experience in retail media, digital advertising, or e-commerce is an asset.
  • Working knowledge of reinforcement learning and linear and nonlinear optimization is a strong asset.

About the Company

Omnicom Group

Global marketing, media, and PR network

Omnicom Group is a global marketing and corporate communications holding company that organizes a network of agencies to offer advertising, strategic media planning and buying, digital marketing, and public relations. Its products and services are delivered through this portfolio of agency networks and specialty firms, generating revenue from project-based fees, commissions, and performance-based incentives. The company uses the Omni platform to base marketing and sales solutions on data, helping turn insights into creative campaigns and media plans. Unlike many competitors, Omnicom combines a wide international footprint with a diversified set of agencies and a centralized data-driven approach, and it expands through strategic acquisitions. Its goal is to help clients grow brands and businesses by delivering coordinated, data-informed marketing and communications across markets worldwide.

Company size
5,001-10,000
Company stage
IPO
Headquarters
New York City, New York
Founded
1944

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