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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Junior Data Scientist - Downstream Demand Forecast - Value Chain F - M - D H/F - **Company:** Décathlon Group - **Location:** Lille, France (Remote available) - **Experience:** Starter - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Airflow, Amazon Web Services, Data Analysis, Confluence, Computer Programming, Continuous Integration, Data Visualization, Github, Protocol Buffers, Python (Programming Language), Machine Learning, Tensorflow, SQL Databases, Tableau (Software), Google Cloud, Pytorch, Apache Spark, Git, Pyspark, Scikit Learn, Data Analytics, Machine Learning Operations, Grpc, Docker, Databricks, Programming Languages - **Published:** September 5, 2026 - **Apply:** https://www.hellowork.com/fr-fr/emplois/83066797.html ## About the Role As a Junior Data Scientist, you will play a critical role in analyzing data, developing AI models to production, and providing insights to optimize demand forecasting and improve the stock management throughout our supply chain network. We welcome candidates with demonstrated experience in time series forecasting and a passion for leveraging data to drive business decisions., Data Science Experience: You already conducted several Data Science projects with a proficiency in statistical analysis,machine learning techniques including time series time series analysis and forecasting. - Business understanding: You understand supply chain concepts, particularly stock optimization and demand forecasting. You know how to transform business needs into well-defined problems and concrete (actionable) recommendations. - Programming: You have experience with programming languages such as Python, SQL, Spark, TensorFlow, Pytorch for data analysis and modeling. - Analytical mindset: You have a great ability to structure analysis and interpret relevant lessons (insights). - Collaborative spirit: You are comfortable working in multidisciplinary teams (business, data, product, governance). - Proactive & curious: You enjoy exploring new solutions and continuously improving analysis methods. - Languages: You have a professional command of English. ## Description Our Downstream Demand Forecast team is looking for a new Junior Data Scientist based in Lille or Paris. The Downstream Demand Forecast team, part of the Data Supply Chain, is responsible for the design, development, and maintenance of innovative analytical and Artificial Intelligence solutions around multi-echelon demand forecasting. You will work within a multidisciplinary team composed of Data Scientists, Data Analysts, Analytics Engineers, and ML Engineers, working in an agile manner and in close proximity with our Product and Engineering stakeholders as well as our business users., Analyze historical sales data and market trends to forecast demand for Decathlon products. - Analyze historical sales data and compare it with internal factors (such as price, offering, or product information) and external factors (market trends, weather, calendar data, etc.) to forecast demand for Decathlon products. - Develop and implement advanced statistical models and machine learning algorithms for demand forecasting applied for product purchase and replenishment. - Collaborate with cross-functional teams including Supply Chain Business, Engineering, and Product Development to align Data and AI efforts with business objectives. - Evaluate and improve existing forecasting models and methodologies to enhance accuracy and efficiency. - Communicate insights and recommendations to stakeholders through clear and concise data visualizations and presentations. - Stay updated on industry trends and emerging technologies in data science and supply chain management. TECHNICAL STACK The technical environment: - Execution Engine: Databricks, AWS, GCP - Payload: Python, Spark, Scikit-Learn, Tensorflow / Pytorch, Pyspark - CICD: Github Actions - Serving: Docker, Protobuf, gRPC - Model registry, Model Tracking: MLFlow - Orchestration: Airflow - Documentation / code: Git, Confluence - Data Visualisation: Tableau ## Related Videos - [Data Science in Retail](https://www.wearedevelopers.com/videos/586-data-science-in-retail) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [Exploring the Power of gRPC-Gateway for Writing RESTful Services](https://www.wearedevelopers.com/videos/2072-exploring-the-power-of-grpc-gateway-for-writing-restful-services) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Empowering Retail Through Applied Machine Learning](https://www.wearedevelopers.com/videos/976-empowering-retail-through-applied-machine-learning) - [Bringing AI Model Testing and Prompt Management to Your Codebase with GitHub Models](https://www.wearedevelopers.com/videos/1536-bringing-ai-model-testing-and-prompt-management-to-your-codebase-with-github-models) ## 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) - [Best Companies to Work For in France: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/189-best-companies-to-work-for-in-france-top-25-companies-in-2023) - [The Biggest German Tech Companies](https://www.wearedevelopers.com/magazine/424-the-biggest-german-tech-companies) - [Jobs in Tech: The State of the European Market](https://www.wearedevelopers.com/magazine/575-jobs-in-tech-the-state-of-the-european-market) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)