> Markdown version of [/jobs/ext/25297-senior-ml-engineer](https://www.wearedevelopers.com/jobs/ext/25297-senior-ml-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior ML Engineer - **Company:** Criteo SA - **Location:** Paris, France - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Data Analysis, C Sharp (Programming Language), Python (Programming Language), Machine Learning, SQL Databases, Usage Analysis, Apache Spark, Machine Learning Operations, Data Pipelines, Service Stack - **Published:** May 21, 2026 - **Apply:** https://fr.indeed.com/viewjob?jk=0a85cdfb0f7eef04 ## About the Role Do you have experience in Spark?, * You have at least 5 years of experience building and deploying machine learning systems at scale in production environments * You enjoy diving deep into data and have a strong analytical mindset * You are curious, collaborative, and eager to both learn from others and share your expertise with your team * You value cross-functional collaboration and enjoy partnering with R&D teams, Product Managers, and Product Analysts to build efficient, user-centric products ## Description CRITEO is looking for a Senior Machine Learning Engineer to join our R&D team in Paris. Our mission is to power real-time product ranking systems that deliver the most relevant ads to users on retailers' websites as part of our Retail Media solutions (c.f. Retail Media). To achieve this, we design and operate large-scale machine learning systems built on tabular data to predict user behaviors such as clicks and purchases. Our work spans the full ML lifecycle - from building robust data pipelines and developing production-grade models to monitoring and maintaining model performance in production. You'll join a team of Machine Learning Engineers working closely with cross-functional partners across R&D, Product Management, Product Analytics, and Commercial teams to deliver impactful, scalable solutions. Our core technology stack includes Python, Spark, SQL, and C#. Your main missions : * Design, develop, and deploy machine learning models into production * Analyze data and build scalable, reliable data pipelines * Contribute to the team roadmap and technical strategy * Own end-to-end initiatives by defining goals, milestones, and technical deliverables in collaboration with Product Managers * Participate in architecture discussions and help drive technical decisions, actively contributing to the business performance ## Related Videos - [Data Science in Retail](https://www.wearedevelopers.com/videos/586-data-science-in-retail) - [PySpark - Combining Machine Learning & Big Data](https://www.wearedevelopers.com/videos/44-pyspark-combining-machine-learning-big-data) - [Fault Tolerance and Consistency at Scale: Harnessing the Power of Distributed SQL Databases](https://www.wearedevelopers.com/videos/1146-fault-tolerance-and-consistency-at-scale-harnessing-the-power-of-distributed-sql-databases) - [Data Science on Software Data](https://www.wearedevelopers.com/videos/162-data-science-on-software-data) - [Fault Tolerance and Consistency at Scale: Harnessing the Power of Distributed SQL Databases](https://www.wearedevelopers.com/videos/1520-fault-tolerance-and-consistency-at-scale-harnessing-the-power-of-distributed-sql-databases) - [Let's Get Aggregated: Custom UDAFs in Spark ](https://www.wearedevelopers.com/videos/1649-let-s-get-aggregated-custom-udafs-in-spark) ## Related Articles - [Best Companies to Work For in Paris: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/190-best-companies-to-work-for-in-paris-top-25-companies-in-2023) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe) - [Coffee with Developers - Maria Apazoglou - Making AI understandable for all in production](https://www.wearedevelopers.com/magazine/475-coffee-with-developers-maria-apazoglou-making-ai-understandable-for-all-in-production) - [How to Become an AI Engineer](https://www.wearedevelopers.com/magazine/331-how-to-become-an-ai-engineer) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)