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Meilleurtaux

Compares mortgage, loan, and insurance offers

Lead Data Scientist

Applied Machine Learning +1Confirmed live in the last 24 hours
Full-timeCourbevoie, FranceNo salary listed

About the Job

Requirements

  • Master's degree or equivalent in Computer Science, Data Science, or Artificial Intelligence.
  • At least 5 years of Data Science experience.
  • A first experience in team management or technical leadership.
  • Expertise in Python.
  • Mastery of production challenges for large language models, including retrieval-augmented generation, agentic systems, token management, evaluation, and drift.
  • Strong knowledge of classical Machine Learning, Natural Language Processing, and large language models.
  • Understanding of context windows, retrieval-augmented generation, prompting, and agentic architectures.
  • Ability to design reliable and automated evaluation frameworks, including LLM-as-a-judge and business benchmarks.
  • Ability to prioritize, mentor, and lead while remaining hands-on with code and architecture.
  • Ability to understand business needs and orient work toward customer impact.
  • Attention to evaluation, data quality, and model reliability.

Responsibilities

  • Grow the Data Science team while continuing hands-on coding.
  • Structure Data Science and Generative AI practices.
  • Design and challenge critical solutions, including the credit simulation AI agent and agentic workflows, and ensure AI decisions remain relevant and reliable.
  • Design and arbitrate large language model and agentic architectures, including retrieval-augmented generation, tool-calling, and Model Context Protocol.
  • Review pull requests and model good practices.
  • Define and industrialize rigorous evaluation frameworks, including LLM-as-a-judge, business benchmarks, and red-teaming, to validate agentic decisions and scores and meet precision objectives.
  • Lead the design of recommendation scores for rates and proposals to maximize the transmission rate.
  • Work with the AI Technical Lead and MLOps teams to ensure the team's solutions are deployed to production on Azure.
  • Define the Data Science team's technical roadmap and monitor developments in models and agentic frameworks.

Desired Qualifications

  • Experience with Google Cloud Platform.

About the Company

Meilleurtaux

Compares mortgage, loan, and insurance offers

Meilleurtaux operates a French financial services platform that helps individuals compare and access mortgages, personal loans, and insurance from a wide network of partner institutions. Users visit the digital platform to compare options, calculate potential savings, and submit online loan or policy applications, with Meilleurtaux earning a commission from lenders or insurers for successful conversions. The service stands out through its broad network of partners, up-to-date offers, and strong customer support that guides users through the online shopping and application process. The goal is to help French consumers find the best-matching financial products by aggregating offers in one place and earning commissions from partners for successful sign-ups.

Company size
1,001-5,000
Company stage
Acquired
Total funding
Not listed
Headquarters
Mérignac, France
Founded
1999

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