Senior Data Analyst

At Decathlon, our ambition is to bring people together through sport to make physical, mental, and social well-being accessible to everyone. We believe in the power of the team, shared experiences, and prevention through sport to build a happier world. Do you share this vision? Join us!

Do you love making data speak to solve real business challenges? Within our Data team, you turn complex data into clear decision-making levers for our business teams. Your work directly guides our strategy to create value every day.

Mission

• Translation of business needs : you listen to team requests, challenge assumptions, and define precise analytical questions.
• Exploration and cleaning data : you identify the best internal and external data sources, check their quality, and prepare data using SQL, Python, or dbt.
• Building concrete solutions: you create reusable metrics, design prototypes, and test your hypotheses with statistical models.
• Explaining your analysis : you explain complex results using visual storytelling on Tableau or other BI tools to convince non-technical colleagues.
• Working as a team : you document your methods on Git, share best practices with your peers, and care for your own well-being as much as your teammates.

Job Profile

You are passionate about digital , love numbers, and embody our active values every day.

Rigorous and proactive , you organize your work independently, self-motivate, and naturally propose hypotheses and actionable recommendations.

You communicate clearly , you can break down complex findings into simple, synthetic reports for non-technical teammates. Having a good understanding of the business and a good critical thinking, you encounter an operational problem and immediately spot the data needed to solve it.

Moreover,

• You hold a Bachelor's or Master's degree in engineering, informatics, or statistics with a specialization in data engineering, big data , or data science and you bring at least 3 years of hands-on experience in a data analyst role.
• You master data languages: you navigate SQL and Python and R with ease.
• You bring insights to life with high-impact dashboards using Tableau, Looker Studio, or Power BI.
• You bring hands-on experience with cloud environments like AWS, GCP, or Azure.
• A real plus: You are familiar with dbt , DataBricks, have knowledge on Gen AI, on A/B testing strategies and logic and you are product builder (app, assistant)
• You are f luent in French with a solid level in English for our international context (basic Dutch is a plus).

What we offer

• A meaningful project : You join a supportive team (Data Engineers, Datascientists, Data Analysts, Product Manager) where trust is given on day one.
• Real impact : Your analyses directly shape strategic business decisions.
• A stimulating environment : You will be working in our headquarters in Brussels (Evere).

Ready to make data talk with us? Apply today and let's play together!