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Guillaume SaësGS

Guillaume Saës

Senior Data Scientist (LLM Expert)

€400/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

PRESENTATION:
PhD. in Mathematics & Senior Data Scientist, I combine AI expertise with experience in data analysis and signal processing. I have developed advanced Machine Learning models, including LLMs like RaG models, in various sectors (health, transport, industry).

My approach combines scientific rigor and creativity to impute data, optimize complex processes, and design innovative models. I also popularize science through my YouTube channel (800,000 subscribers).

Skills: AI/ML (Deep Learning, LLM), time series, data imputation, visualization, optimization.
Technical Expertise: Python (Scikit-learn, TensorFlow, PyTorch), Matlab, Dataiku, CUDA, advanced statistics.

I transform ideas into concrete solutions, adapted to needs.

PROJECTS
- Development of RaG (Retrieval-Augmented Generation):
Applications in various sectors, notably health (CNAM) and others.

- Missing Data Imputation:
Development of Deep Learning algorithms to handle incomplete data.

- Time Series Forecast:
Participation in projects to predict railway traffic time series.

- Optimization:
Development of constrained optimization algorithms (MILP) for industrial projects (e.g., vehicle transport).

- Signal and Image Analysis Projects:
Multifractal analysis of physiological data from marathon runners and MEG

- Mathematics Research:
Thesis on multifractal analysis and characterization of signal regularity using wavelets.

- Scientific Popularization Projects, Science Trash:
Creation, writing, and production of videos for a broad audience (800,000 subscribers). Management of a team of 20 people to produce engaging content.

BACKGROUND:
- Data Scientist Quantmetry
- Mathematics Aggregation + Mathematics Thesis (Paris)
- Assistant in Probability and Statistics Department at Mons
- YouTuber (Science Trash 700k subscribers)
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Quantmetry
    Data Scientist
    CONSULTING AND AUDITS
    March 2023 - Today (3 years and 3 months)
    Paris, France
    Data Science
  • Université de Mons
    Assistant in Probability and Statistics Department
    EDUCATION AND E-LEARNING
    September 2020 - Today (5 years and 9 months)
    Mons, Belgium
    Higher Education Research
  • Science Trash
    Head of Science Trash YouTube Channel
    FILM AND AV
    January 2020 - Today (6 years and 5 months)
    Paris, France
    Video Production Scientific Popularization

Recommendations

MF
Baptiste Marc MokaBM
Mathieu Fernandes and 1 other person have recommended Guillaume

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Education

  • PhD in Mathematics
    Université Paris-Est (France) and Université de Mons (Belgium)
    2021
    Analyse multifractale et traitement du signal
  • Master of Mathematics
    Université Pierre Marie Curie
    2013
    Préparation aux concours de l'agrégation de mathématiques

Certifications

  • Dataiku Core Designer
    Dataiku
    Dataiku DSS Dataiku
  • IBM Watsonx.ai Generative AI Models Sales Foundation
    IBM
    2025
    IBM Watson

Skill set

Categories