cover image
Hays

Senior Machine Learning Engineer

Remote

Toronto, Canada

Senior

Freelance

09-12-2025

Share this job:

Skills

Python Go SQL Problem-solving A/B Testing fast api Azure AWS GCP

Job Specifications

About the Role:

Join the Media & Advertising team supporting digital and agency integrations (e.g., YouTube, Meta) for advertiser campaigns. You’ll lead end-to-end ML solution development focused on ad performance and audience targeting.

Key Responsibilities:

Build and deploy ML models for Click-Through Rate (CTR) prediction, time series forecasting, and budget optimization
Maintain and enhance audience lookalike models
Design and implement A/B testing frameworks
Collaborate with cross-functional teams to deliver scalable ML solutions

Tech Stack:

Cloud: GCP (preferred), AWS or Azure also acceptable
ML Tools: Vertex AI, Amazon SageMaker
Languages: Python, Go
Other: SQL, Fast API, LLMs (nice to have)

Ideal Candidate:

Experienced ML Engineer with strong end-to-end deployment skills
Hands-on with CTR modelling, forecasting, and ad relevancy
Comfortable working in a fast-paced, product-driven environment
Strong coding and problem-solving skills

About the Company

We are leaders in specialist recruitment and workforce solutions, offering advisory services such as learning and skill development, career transitions and employer brand positioning. As the Leadership Partner to our customers, we invest in lifelong partnerships that empower people and businesses to succeed. We help you achieve your career goals and deliver your business needs by combining meaningful innovation with our global scale and insights. Last year we helped over 280,000 people find their next career. Join the mill... Know more