Senior Data Scientist - Ecommerce (f/m/d)
Decathlon Digital EN
| Company | Decathlon Digital EN |
| Category | Data & Analytics |
| Location | Lille |
| Remote | On-site (inferred) |
| Employment | Not stated |
| Level | Senior |
| Salary | Not stated by the employer |
| Posted | 30 Apr 2026 |
| Last verified | 11 Aug 2026 |
| Source | Employer ATS (greenhouse) |
Description
We are looking for a Senior Data Scientist (f/m/d) to join the Digital Analytics team within Ecommerce.
The Digital Analytics team enables data-informed decision-making across Decathlon ecommerce, driving faster and smarter outcomes. We go beyond descriptive analytics by combining advanced analytics, experimentation, and data science to both understand and shape customer behavior. By embedding these capabilities into our digital products, we power intelligent features, personalization, and continuous optimization at scale. By integrating data across the full product lifecycle, we ensure every feature and iteration delivers meaningful value for both users and the business.
As a Senior Data Scientist, you will play a key role in exploring data, generating insights, and building data-powered product experiences. You will partner closely with product managers, engineers, and analysts to apply predictive and prescriptive analytics, and develop models that directly impact customer experience and business performance.
This is a highly product-oriented role: we are looking for someone who combines strong analytical thinking with applied data science, and who has hands-on experience delivering solutions in real-world product environments. You should be comfortable moving from exploration and hypothesis generation to modeling and impact measurement, with a focus on delivering tangible outcomes in a product environment.
YOUR FUTURE CONTRIBUTION
As a Senior Data Scientist, you will play a key role in exploring data, generating insights, and building data-powered product experiences. You will partner closely with product managers, engineers, and analysts to apply predictive and prescriptive analytics, and develop models that directly impact customer experience and business performance.
Build data science & advanced analytics solutions: Develop machine learning models and apply predictive and prescriptive analytics to solve complex ecommerce and customer experience problems.
Own end-to-end use cases: Translate business and product requirements into clear data science approaches. Take full ownership from problem discovery to modeling, deployment, and ongoing refinement.
Explore & identify opportunities: Proactively analyze data to uncover customer behaviors, trends, and high-impact opportunities.
Collaborate to deliver in production: Partner closely with product and engineering to bring solutions live, ensuring scalability, reliability, and business impact.
WHAT YOU BRING
End-to-end Data Science Ownership: Experience across the entire lifecycle (discovery, feature engineering, modeling, experimentation, deployment).
Applied Data Science: Strong ability to apply statistical modeling and machine learning to real-world product problems like conversion optimization or personalization.
Product expertise: Experience working in product environments with a focus on optimizing customer journeys.
Technical Proficiency: Strong programming skills in Python (pandas, scikit-learn) and large-scale data tools (SQL, Spark).
Collaboration: Proven ability to partner with diverse stakeholders and communicate insights effectively.
TECHNICAL STACK
Languages & Frameworks : Python (Pandas, Scikit-learn), SQL, Spark / PySpark.
Environnement : Databricks, Jupyter Notebooks, Git, MLflow.
Analytics Tools : Statsig, Amplitude, Tableau.
Bonus : TensorFlow, PyTorch.
WHAT WE OFFER
Hybrid work organization;
Equipment provided in line with your missions and our societal commitments (Mac or Windows);
A local project team within a global network (international career opportunities);
Skills development and support (diversity of projects, internal and external training, etc.);
Remuneration package (employee shareholding, monthly/quarterly bonuses).
OUR COMMITMENT TO INCLUSION AND ACCESSIBILITY
At Decathlon, we recognize the immense value that diversity brings