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# Senior Data Analyst

- **Company:** Decathlon
- **Location:** Evere, Belgium
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** A/B Testing, Amazon Web Services, Microsoft Azure, Big Data, Information Engineering, R (Programming Language), Python (Programming Language), Power BI, SQL Databases, Tableau (Software), Cloud Platform System, Google Data Studio, Generative AI, Git, Information Technology, Data Management, Databricks
- **Published:** October 6, 2026
- **Apply:** https://www.nieuwejobs.com/job/viewjob/9485835/senior-data-analyst.html

## About the Role

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 fluent in French with a solid level in English for our international context (basic Dutch is a plus).

## Description

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.

 * 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.