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Senior Machine Learning Engineer - Causality

  • Hybrid -
    • Paris, France
    • Grenoble, France
  • Engineering
  • Permanent - Full Time

Senior Machine Learning Engineer - Causality

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Job ID: r20135

What You'll Do:

At Criteo, we’re not just crunching numbers — we’re redefining how brands connect with their audiences.

By joining the AI for Performance group, you’ll become part of a global R&D organization of 1,000+ engineers, while working day to day in a small Product Engineering team (5–7 people). You’ll sit at the intersection of machine learning, data, and product, helping us measure and predict the causal impact of our advertising, and directly influence how our products perform at scale.

If you’re excited by incrementality, experimentation, and large-scale ML systems, this role is for you.

🧠 Your role at a glance :

  • Analyze the causal impact of Criteo’s advertising campaigns using experiments, third-party data, and advanced measurement techniques 📊

  • Develop machine learning models to predict causal impact and influence our bidding strategies 🎯

  • Design and build multi-stage data pipelines, processing terabytes of data every day 🏗️

  • Contribute to tooling for A/B test analysis, ensuring accurate measurement of campaign and product performance 🔬

  • Collaborate closely with Data, Product, and Engineering teams to bring research into production 🤝

  • Actively contribute to a strong scientific and engineering culture, sharing best practices and new ideas 📚✨

Who You Are:

  • You hold a Master’s degree or PhD in Machine Learning, Computer Science, or a related quantitative field 🎓

  • You possess at least 5 years of experience as a ML Engineer or Data Scientist/ Researcher

  • You have hands-on development experience in at least one mainstream programming language (Python, Java, C++, etc.) 💻

  • You are skilled in sourcing, cleaning, manipulating, and analyzing large-scale datasets, ideally in a Hadoop-based environment 📈

  • Experience with both classical and state-of-the-art machine learning techniques is a strong plus 🤖

  • You are fluent in English and comfortable working in international, multicultural teams 🌍

  • You are curious, rigorous, and motivated by problems where science, product, and business impact meet 💡

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:

We’re Criteo, the Commerce Intelligence Platform. Criteo helps businesses turn shopper signals into commerce outcomes while delivering more relevant experiences for shoppers. We use proprietary commerce intelligence and AI decisioning to drive relevance for shoppers and performance for businesses.

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.

Perks & Benefits for all Criteos.

Happy people make healthy teams, so we value employee well-being above all else. Discover the perks & benefits we offer all our Criteos!!

Ways of Working

Trust and flexibility are at our core, so is the power of being together. Our hybrid model blends empowerment with shared in-person experiences, making space for both. We believe this is the most valuable way to foster collaboration in a way that helps us grow, together.

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Learning & Career Development

As your skills multiply, opportunities do too. So, we care to help you nurture your potential, identify new goals, and define what you want out of your career. Discover how we have diversified our learning resources and training catalog for you to shape greater opportunities. You care for your career growth, and we do too.

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Corporate Social Responsibility

We care to build an open future for our community and beyond. Discover how our people fuel our Corporate Social Responsibility from the bottom up, embracing but also embodying and promoting values of diversity, equity, and inclusion through everything they do. Together, we strive to build a future that truly includes everyone.

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Great people shape greater opportunities.

At Criteo, we believe great people and reliable products are essential to build an open future for all.
Everything you need to know about our culture, vision, values, and how we live them with people, both in and out of Criteo, is in our Culture Book. Discover who we are, what we do, and how we act as a company and as Criteos!
Our culture
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Meet our Criteos in France!

Criteo came to spring off of a few great minds, back in 2005. From the start-up incubator to the global company we are now, Criteo has grown, standing now for 37 offices and further coworking spaces across the globe. In France, we welcome around 1,000 Criteos in our two spacious and collaborative hubs of Paris and Grenoble.

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The Future is Yours.

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