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Louis De BellevueLD

Louis De Bellevue

Senior Data & AI Engineer

€500/day
Paris, FR
3-7 years

Average response time: 1 hour

About Louis

Senior Data & IA Engineer

As Data and Machine Learning Engineer with 6 years of experience, I specialize in building end-to-end data infrastructures from the ground up. As the data team lead in my last role, I independently designed, constructed, and automated a complete data platform on AWS.

For the past three years, I have owned the entire data lifecycle for my company. My key achievements include:

- End-to-End Platform Development: Architected and implemented a full analytics pipeline, from data collection and complex ETL processes to storage in a data warehouse.

- Modern Cloud Infrastructure: Built a scalable infrastructure on AWS, utilizing S3 for data lakes, ECS & ECR for containerized applications with Docker, and PostgreSQL on Aurora Serverless for our data warehouse.

- Workflow Orchestration & Automation: Implemented robust CI/CD pipelines and orchestrated complex data workflows with Prefect, ensuring high availability and reliability.

- LLM integration : Used Mistral and OpenAI models in production

- Business Intelligence Integration: Successfully channeled processed data into the Luzmo BI tool, empowering the business with actionable dashboards.


Before specializing in data engineering, I spent three years as an ML engineer.
This background gives me a deep understanding of ML models and LLMs.

- Worked on challenging projects in computer vision and time series prediction with medical data.

- Developed and deployed algorithms using GCP, PyTorch, and Scikit-Learn.

My experience covers the full data value chain, making me comfortable in both high-level business discussions and deep technical implementation. I prioritize clear communication and a pragmatic approach to building solutions that deliver tangible business value.

Education
- M.S. in Data Science | École Polytechnique
- M.S. in Applied Mathematics & Optimisation | ENSTA Paris
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km)

Experience

  • LIVETREND
    Lead tech - Data engineer
    SOFTWARE PUBLISHING
    September 2022 - November 2025 (3 years and 2 months)
    Paris, France
    Sole Data Engineer
    - Owned the end-to-end design and implementation of a scalable data infrastructure on AWS (S3, ECS, ECR) to support a SaaS analytics product.
    - Engineered and orchestrated complex ETL pipelines using Python, Prefect, and PostgreSQL to process data for 20+ paying enterprise clients in the fashion industry.
    - As the single point of contact for data engineering, I successfully delivered a foundational data platform that served as the core of the company's product offering.
  • Kiro
    Data Scientist
    MEDICAL
    March 2020 - May 2022 (2 years and 2 months)
    Paris, France
    - Automated lab test recommendation using AI.
    - Medical pathology prediction.
    Recurrent neural networks Machine learning Time Series Convolutional neural networks
  • Ministry of National Education
    Part-time mathematics teacher in middle school and high school
    EDUCATION AND E-LEARNING
    May 2022 - December 2022 (8 months)
    Paris, France
    Part-time mathematics teacher in middle school and high school.
    Prepared classes and gave marhs lessons to classes of 30 students.
    Mathematics

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Education

  • Master of Science
    École Polytechnique
    2019
    Master of Science - MS, Data Science
  • Master's degree, Applied Mathematics, Optimisation, Computer Science
    ENSTA ParisTech - École Nationale Supérieure de Techniques Avancées
    2019
    Master's degree, Applied Mathematics, Computer Science

Skill set

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