Decathlon Digital

About the Company

Decathlon Digital: Powering sports for tomorrow.

Guided by our corporate North Star - to move people through the wonders of sport - our goal is to enable Decathlon to become the biggest digital sports platform and open ecosystem, empowering sports lovers and athletes everywhere.

We design innovative software, data, security, and robotics solutions to deliver a seamless and secure ecosystem of sports products and services to our 400 million customers and users worldwide while enabling our 101,000+ teammates to thrive.

Join us on this journey to build the future of sports technology.

Listed Jobs

Company Name

Decathlon Digital

Job Title

Junior Data Engineer R&D (f/m/d) - Internship

Job Description

Job Title: Junior Data Engineer R&D (Internship) Role Summary: Intern in the Data Platform team focused on designing and implementing a data provenance solution for Decathlon’s Data Lake, improving traceability, compliance, and support for data‑driven analytics and machine learning at scale. Expectations: - Deliver a functional, automated data provenance tool compatible with Apache Spark. - Bridge academic research and industrial implementation, producing production‑ready solutions. - Ensure accuracy, reliability, and GDPR compliance for PII tracking. - Facilitate knowledge transfer to the broader Data Engineering team. Key Responsibilities: - Analyze existing data pipelines and define provenance requirements. - Design and prototype fine‑grained provenance mechanisms using Spark, Delta Lake, or similar. - Implement data lineage tracking, root‑cause analysis, and compliance reporting. - Validate solution against performance, scalability, and accuracy benchmarks. - Document architecture, design choices, and best practices for internal use. Required Skills: - Strong SQL proficiency; understanding of relational algebra preferred. - Programming in Python (mandatory); Scala experience is a plus. - Version control (Git). - Knowledge of distributed systems and parallel processing. - Familiarity with Big Data stack: Apache Spark, Hadoop, Hive, Delta Lake. - Analytical mindset with ability to tackle algorithmic challenges. - Excellent written and verbal communication in English and French. Required Education & Certifications: - Current Master’s (M1/M2) student in Computer Science, Data Science, Applied Mathematics, or related field. - Ongoing study in data engineering or big data analytics.

Villeneuve-d’ascq, France

Hybrid

Junior

13-01-2026

Company Name

Decathlon Digital

Job Title

Junior Data scientist (f/m/d) - Circularity - Internship

Job Description

**Job title** Junior Data Scientist (f/m/d) – Circularity – Internship **Role Summary** Intern to design and implement data‑driven solutions for Decathlon’s circularity initiatives, focusing on the AI‑Genda project. Responsibilities include building a digital twin of workshop operations, developing simulation and optimization models, integrating visualisations, and validating outcomes against real‑world metrics. **Expectations** - Translate mathematical theories into efficient, production‑ready Python code. - Apply SOLID principles, write clean, well‑tested, maintainable code. - Perform iterative debugging, profiling, and performance tuning. - Create clear visualisations and animations to convey complex model behaviour. - Collaborate across data, engineering, and domain teams; question assumptions and drive continuous improvement. **Key Responsibilities** - Model workshop scheduling using Markov Decision Processes (MDP). - Simulate concurrent events with Discrete‑Event Simulation (DES) in SimPy. - Extend the current SimPy + Gymnasium prototype. - Strengthen robustness of the implementation and integrate Simbala visualisations. - Validate model outputs against field data and define appropriate performance metrics. - Solve Generalised Assignment Problem style optimisation challenges for technician scheduling. **Required Skills** - Expert in Python, data structures, OOP, and libraries: SimPy, Gymnasium, Simbala, Plotly/Matplotlib. - Testing & quality assurance with Pytest, Unittest, and Hypothesis (preferred). - Version control with Git. - Knowledge of MDP, DES, and assignment‑problem algorithms. - Ability to design dashboards (basic knowledge of Tableau is a plus). **Required Education & Certifications** - Master’s level (M1 or M2) in Computer Science, Operations Research, or Applied Mathematics. - No specific certifications required.

Villeneuve-d’ascq, France

Hybrid

Junior

13-01-2026

Company Name

Decathlon Digital

Job Title

Junior AI Engineer - Internship - Circularity (f/m/d)

Job Description

**Job Title** Junior AI Engineer – Internship – Circularity **Role Summary** Intern will join the Plant (Planet Analytics/AI) team to transform raw product data into actionable insights for the Circularity program. Focus is on developing Generative‑AI agents for web scraping, building end‑to‑end data pipelines, and integrating structured data into the Circular Product Information Management system. **Expectations** - Deliver deployable GenAI scraping agents and associated data pipelines within a semester‑long internship. - Collaborate cross‑functionally with data, pricing, and product teams to meet quality and integration standards. - Maintain documentation, test coverage, and monitoring for automated data ingestion. **Key Responsibilities** - Design and implement GenAI agents (LLM APIs, prompt engineering, agent frameworks) to scrape product information, primarily for cycling. - Build, test, and deploy robust data pipelines: extraction, cleaning, transformation, and loading into the PIM. - Create and maintain database schemas, data models, and documentation to support scalability. - Write unit/testing scripts (Pytest/Unittest) and perform continuous monitoring to guarantee data quality. - Coordinate with the Pricing team to align data formats with circular pricing models. **Required Skills** - Proficiency in Python (data structures, classes, OOP). - Experience with web scraping libraries (BeautifulSoup, Scrapy, Requests) – preferred. - Familiarity with LLM APIs, prompt engineering, and agent frameworks (e.g., ADK, Vertex AI). - SQL knowledge and data modeling concepts. - Cloud‑based workflow orchestration and data ingestion best practices. - Version control using Git and basic DevOps practices. - Strong problem‑solving skills and teamwork orientation. **Required Education & Certifications** - Current university student or graduate in Computer Science, Data Science, Applied Mathematics, or related field. - Demonstrated coursework or projects involving Python programming, data pipelines, or machine‑learning concepts. - No specific industry certifications required.

Villeneuve-d’ascq, France

Hybrid

Junior

20-01-2026

Company Name

Decathlon Digital

Job Title

Sr. Information Security Officer (f/m/d)

Job Description

Job title: Senior Information Security Officer (f/m/d) Role Summary: Lead the security strategy for Decathlon Digital’s e-commerce platforms, ensuring robust protection of digital assets, customer data, and regulatory compliance across a global, cloud-based environment. Expectations: - Own end-to-end cyber security lifecycle for e-commerce. - Align security KPIs and priorities with business and country stakeholders. - Drive continuous improvement of security posture and risk management. - Build and mentor cyber security capabilities within cross-functional teams. - Promote security-by-design in product development and industry best practices. Key Responsibilities: 1. Define and evolve e‑commerce security strategy, co‑creating risk‑based KPIs. 2. Design annual security action plans grounded in risk assessments. 3. Manage cyber incident lifecycle: detection, investigation, containment, resolution, and lessons‑learned. 4. Ensure adherence to internal frameworks (IS Framework & ISP) and regulatory requirements, especially data protection laws. 5. Conduct technical audits of applications and infrastructures; maintain threat intelligence awareness. 6. Champion continuous improvement, measuring objective progress and informing future strategies. 7. Apply security-by-design principles during product conception and delivery. 8. Deliver high‑quality security documentation and reporting to senior stakeholders. Required Skills: - Strong application security expertise (web, mobile, API). - Operational knowledge of cloud environments, especially Google Cloud Platform (GCP). - Proficient in risk‑based management and incident response. - Deep understanding of data protection regulations (GDPR, PDPA, etc.). - Excellent written and verbal communication; ability to influence and report effectively. - Strategic vision for long‑term e‑commerce security. - Team‑player with initiative, client focus, and rigorous documentation practices. Required Education & Certifications: - Bachelor’s degree in Computer Science, Information Security, or related field (or equivalent experience). - Professional certifications preferred: CISM, CISSP, ISO 27001 Lead Implementer, ISO 27005 Lead Auditor, and cloud architecture certifications (e.g., Google Cloud Certified – Professional Cloud Security Engineer).

Lille, France

Hybrid

02-02-2026