Senior Machine Learning Engineer
Criteo
Software Engineering
Toronto, ON, Canada · Ann Arbor, MI, USA
Posted on Sep 11, 2025
What if, in your next adventure, you were surrounded by people who, like you, look for an unlimited playground to explore, share, and test, would you care to hear more? You've opened the right door! As an R&D team, making sure your ideas are heard and encouraged is what we strive to do!
What You'll Do:
- As an ML engineer on the Onsite Auction team, you will design, develop, and maintain machine learning models to predict outcomes, optimize advertiser metrics such as ROAS, and maximize retailer revenue.
- Collaborate closely with other ML teams at Criteo to productionize cutting-edge ML techniques.
- Understand product and customer priorities, and balance those against operational and technical needs.
- Guarantee top-quality code; practice code reviews, unit tests, integration tests, and end-to-end tests in a continuous integration environment.
Who You Are:
- BS in Software Engineering or related field, with 3+ years of experience in Machine Learning or Data Science.
- Proficient in core software engineering concepts, including data structures, algorithms, and performance optimization, with hands-on experience using tools like SQL, Spark, and PyTorch.
- Experienced in designing and building scalable models capable of handling and training on billions of requests daily.
- Passionate about transforming complex requirements into clear, maintainable, and high-performance solutions.
- A strong communicator and collaborative team player, dedicated to working effectively with others and contributing to team growth.
- Committed to building exceptional customer experiences through quality design, analysis, and testing.
- A creative technologist with a strong desire to ship high-quality, impactful code, while continuously solving problems and enhancing product value.
We acknowledge that many candidates may not meet every single role requirement listed above. If your experience looks a little different from our requirements but you believe that you can still bring value to the role, we’d love to see your application!
Who We Are:
Criteo is a leader in commerce media, helping brands, agencies, and publishers create meaningful consumer connections through AI-powered advertising solutions. We’re shaping a more open and sustainable digital future for advertising.
At Criteo, our culture is as unique as it is diverse. From our offices across the globe or from the comfort of home, our 3,600 Criteos collaborate together to build an open, impactful, and forward-thinking environment.
We foster a workplace where everyone is valued, and employment decisions are based solely on skills, qualifications, and business needs—never on non-job-related factors or legally protected characteristics.
What We Offer:
🏢 Ways of working – Our hybrid model blends home with in-office experiences, making space for both.
📈 Grow with us – Learning, mentorship & career development programs.
💪 Your wellbeing matters – Health benefits, wellness perks & mental health support.
🤝 A team that cares – Diverse, inclusive, and globally connected.
💸 Fair pay & perks – Attractive salary, with performance-based rewards and family-friendly policies, plus the potential for equity depending on role and level.
Additional benefits may vary depending on the country where you work and the nature of your employment with Criteo.