Data Scientist GenAI

About the job

You’ll join our Data Science team, where your main mission will be to prototype, iterate, and ship algorithms to production in close collaboration with Product, Data Engineering, and Software teams. Your projects will focus on Marketplace catalog challenges, including NLP, Computer Vision, and large‑scale Generative AI (custom LLMs). The topics you’ll tackle will have a real impact on our customers: we aim to make the most of our rich, diverse data to grow their revenue, streamline marketplace operations, and ensure user and transaction safety.

Remote set‑up

• 4 days worked from our offices per week
• A day worked remotely per week

We’re hiring on a permanent contract (CDI), based in our Paris or Bordeaux office, 1 day remote per week.

Catalog topics

• Automatic rewriting of marketing content based on business needs
• Extracting product attributes from images and free text
• Detecting product variants
• Product categorization
• Automated onboarding of sellers’ products
• Merging product pages from multiple sources
• Predicting trending products

What’s in it for you

• Build algorithms that visibly impact 500+ e‑commerce/marketplace sites in 40 countries, including some with very high volumes (millions of products, customers, and orders per year)
• Work with cutting‑edge techniques (multimodal models, LLM fine‑tuning, etc.). Mirakl is one of the few French players with fine‑tuned LLMs in large‑scale production. Join us and keep pushing that pioneer spirit
• Real autonomy and ownership over your projects

Day to day, you will

• Analyze and prepare data, prototype algorithms
• Put them into production with Data Engineers and dev teams
• Build dashboards to demonstrate algorithm performance and monitor production
• Present results at the weekly data science meeting and join team brainstorms
• Partner with other teams to refine use cases, user experience, and integration paths

You’ll love this job if

• You have at least 4 years’ experience as a Data Scientist, with strong hands‑on NLP and applied ML in industry
• You’ve deployed Machine Learning algorithms to production
• You know NLP and Computer Vision algorithms and state‑of‑the‑art architectures (e.g., Transformers). Knowledge of the latest LLMs is a plus
• You’re fluent in Python and TensorFlow and/or PyTorch
• You have experience with Spark development
• You’re pragmatic, data‑driven, and business‑oriented
• You take full ownership of your topics, work autonomously, and are a great team player
• You bring a positive mindset: respect and kindness are core to your values
• You enjoy sharing your work through internal talks, conferences, or writing
• A 30‑minute phone call with one of our Tech recruiters. We’ll discuss your background, expectations, and what Mirakl can offer you
• A 30‑minute technical Zoom with someone from the Data Science team to dive into concrete aspects of your expertise and how it fits our projects
• A take‑home assignment
• A 75‑minute technical debrief and discussion with the Data Science team manager
• A final 1‑hour Zoom with future Mirakl colleagues about our values and culture

Mirakl handles personal data during your recruitment processes. Mirakl is the controller of the personal data, meaning it decides how and why the data is processed. Mirakl takes strong commitment to protecting applicant data and ensuring compliance with privacy regulations during the recruitment process, in particular:

• Types of Data Processed : Mirakl collects data such as name, contact details, educational and employment history, and other relevant information provided during the application process.
• Purpose of Data Use : The data is used to manage and process applications, communicate with candidates and, upon successful application, to onboard the individual.
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• Data Retention : Personal data is retained only as long as necessary for the recruitment process or to comply with legal obligations, typically up to two years from the last contact.
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