Freelance Data Scientist - AI Marketplace Platform

About the Job

As part of our Data Science team (50+ people), your main mission will be to prototype, iterate, and put algorithms into production in collaboration with the Product teams, Data Engineers, and Development teams.

The topics you will be working on will have a real impact on 450+ of the world’s largest retailers (Best Buy, Decathlon, Leroy Merlin, Macy’s, etc.) and 100k+ sellers. The goal is to make the most of our rich and varied data in order to increase their revenue, optimise the operational management of their businesses, and ensure the security of users and transactions.

We are looking for someone as a freelance contractor, based in Paris, Bordeaux, or working fully remotely (from France).

Current and Future Topics

• Detecting anomalies in product prices
• Analyzing sentiment in seller/consumer exchanges to prioritise critical messages
• Estimating package delivery times
• Predicting and anticipating stock shortages
• Detecting anomalies in seller behaviour
• Developing AI agents to help sellers take action on their businesses

Job Offer

• Implementing algorithms that will have a visible impact on more than 500 e‑commerce sites/marketplaces in 40 countries, some of which are very large (millions of products, customers, orders per year)
• A wide variety of techniques (time series, heuristics, deep learning, NLP, LLM, etc.)
• Real autonomy and responsibility in the projects you own

Our Stack and Tools

Python, TensorFlow, Keras, PyTorch, Databricks, Spark, AWS (Amazon Redshift, S3, etc.), SQL, Airflow, Delta Lake.

On a Daily Basis, You Will

• Analyse and prepare data, prototype algorithms
• Put them into production in collaboration with Data Engineers and development teams
• Create dashboards to illustrate the relevance of algorithms and monitor production
• Present results at weekly data science meetings and participate in team brainstorming sessions
• Liaise with other teams to refine use cases, user experience, and integration methods

Desired Profile

• You have a background in machine learning, mathematics, computer science (or a related field)
• You already have 3 years of experience in a similar position
• You have significant experience in applied ML in a business setting
• You have a good knowledge of machine learning and deep learning algorithms (particularly state‑of‑the‑art architectures, such as Transformers)
• You are proficient in Python, TensorFlow, and/or PyTorch
• You are pragmatic, data‑driven, and business‑oriented with good team spirit
• You like to take ownership of your projects and are curious
• You have a positive attitude: respect and kindness are part of your values

We welcome collaborators with their diverse perspectives and experiences to power us forward. These often far exceed conventional job requirements and help us create a culture of continuous learning. If you’re ready to join a global leader powering digital transformation for 450+ of the world’s most innovative retailers and B2B organisations, we strongly encourage you to apply to any of our roles, even if you think you’re not an exact match.

We may use Artificial Intelligence (AI) solutions to help streamline our hiring process, including screening applications, analysing resumes, and assessing responses. While AI helps us work efficiently, all final hiring decisions are made by humans. For more information, visit AI Guidelines for Candidates and Interviews.