Full-Time

Lead Data Scientist

Meilleurtaux

Meilleurtaux

1,001-5,000 employees

Compares mortgage, loan, and insurance offers

No salary listed

Courbevoie, France

Hybrid

Two days of remote work per week are available after onboarding.

Master's

Category
AI & Machine Learning (1)
Required Skills
LLM
Microsoft Azure
Agile
Python
GitHub Actions
Data Science
Git
Machine Learning
OpenAI
Docker
RAG
LangGraph
Observability
REST APIs
Google Cloud Platform

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Requirements
  • At least five years of experience in Data Science.
  • A first experience managing a team or serving as a technical lead.
  • Expertise in Python.
  • An engineering-school education or an equivalent Master's degree in Computer Science, Data Science, or Artificial Intelligence.
  • Proficiency in classical Machine Learning and current NLP and Large Language Model topics.
  • Strong understanding of Large Language Models, 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.
  • Understanding of production challenges for Large Language Models, including Retrieval-Augmented Generation, agentic systems, token management, evaluation, and model drift.
  • Strong attention to evaluation, data quality, and model reliability.
Responsibilities
  • Lead and grow the Data Science team while remaining hands-on in coding and architecture.
  • 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 engineering practices.
  • Define and industrialize rigorous evaluation frameworks, including LLM-as-a-judge, business benchmarks, and red-teaming.
  • Lead the design of recommendation scores for rates and offers to maximize transmission rates.
  • 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.
  • Manage, mentor, and prioritize the team's work while maintaining hands-on involvement in code and architecture.
  • Understand business needs before coding and guide the team toward customer impact.
Desired Qualifications
  • Experience with Google Cloud Platform.

Meilleurtaux operates a French financial services platform that lets users compare mortgages, personal loans, and insurance from many partners. The platform aggregates offers on web and mobile, enabling users to review options, estimate savings, and apply online; it earns commissions from lenders or insurers when a loan or policy is issued. It differentiates itself through a large partner network, up-to-date offers, and strong customer service with detailed comparison tools to streamline shopping and applications. Its goal is to help French consumers find the best-matching financing and insurance by centralizing offers and facilitating online applications.

Company Size

1,001-5,000

Company Stage

Acquired

Total Funding

N/A

Headquarters

Mérignac, France

Founded

1999

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Simplify Jobs

Simplify's Take

What believers are saying

  • AI First strategy automates intake and back-office work, raising margins quickly.
  • August 2026 rates stayed stable, supporting refinancing and purchase simulations.
  • Belgian expansion plus insurance and investments diversify revenue beyond French mortgages.

What critics are saying

  • Banks and insurers can bypass brokers through direct digital distribution by 2027.
  • OpenAI, Google, and banks own customer interfaces; Meilleurtaux becomes replaceable plumbing.
  • Mortgage volumes stay rate-sensitive; August 2026's 3.33% and 3.44% rates squeeze demand.

What makes Meilleurtaux unique

  • May 2026: first French broker to launch mortgage simulations inside ChatGPT.
  • Meilleurtaux combines 350 French agencies with real-time pricing from 125 partners.
  • December 2025: Peasy acquisition extends Meilleurtaux across Belgium and Luxembourg.

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Benefits

Health Insurance

Disability Insurance

Meal Benefits

Remote Work Options

Hybrid Work Options

Commuter Benefits

Training Programs

Professional Development Budget

Growth & Insights and Company News

Headcount

6 month growth

4%

1 year growth

4%

2 year growth

4%
Business Wire
May 29th, 2026
Meilleurtaux becomes first French broker to launch mortgage app on ChatGPT

Meilleurtaux, a French financial services brokerage platform, has launched a mortgage lending application within ChatGPT, becoming the first broker in France to do so. Users can now simulate mortgages through natural language conversations, receiving personalised borrowing capacity assessments using real-time rates from 125 partners without filling out traditional forms. The integration forms part of Meilleurtaux's "AI First" strategy, which aims to double the company's size within three years. Built using the Model Context Protocol, the application connects ChatGPT to Meilleurtaux's proprietary data in real time. The company has also deployed AI initiatives in back-office automation and customer engagement through Salesforce's Agentforce platform. Founded in 1999, Meilleurtaux operates as France's leading omnichannel brokerage platform across lending, insurance and investments.