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Nicolas CharpenayNC

Nicolas Charpenay

Data Scientist – Statistics & Optimization

€650/day
Paray-le-Monial, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Nicolas

I support my clients in solving complex decision-making problems: operational constraints and/or uncertainties, standard approaches are insufficient. I first offer rigorous modeling assistance to establish a mathematical framework for obtaining robust results. I then design and implement a solution, providing mathematical guarantees whenever possible: proof of optimality, confidence interval, worst-case performance, etc...

My expertise is based on advanced training in applied mathematics (probability/statistics and optimization), with a scientific track record evidenced by 8 publications. I favor transparent, theoretically justified methods adapted to the real constraints of projects, thus providing reliability and methodological guarantees where approximation or "black box" are not acceptable.

More specifically, I work on:
- statistical data analysis (exploratory, inferential, model validation),
- the design of probabilistic/statistical models,
- optimization problems (stochastic or deterministic) and operational research.

My deliverables range from methodological audits and scientific framing to the implementation of prototypes (Python/Julia), technical reports, decision support tools, and operationally actionable recommendations.
  • French

    Native or bilingual

  • English

    Fluent

  • German

    Basic

Remote only
Primarily works remotely

Experience

  • IRMAR, University of Rennes
    Non-Tenured Teaching and Research Fellow, GAE team
    EDUCATION AND E-LEARNING
    September 2023 - September 2024 (1 year)
    Rennes, France
    Teaching mathematics (192 hours, Master and Bachelor levels) at the University of Rennes: core curriculum, preparation to competitive recruitment examination, algorithms and graph theory, information theory.

    This role involved designing course roadmaps, adapting explanations to different audiences, and conveying mathematical concepts with clarity and concision.
    Technical Communication Science Popularization Graph Theory Algorithmic Analysis
  • IRISA Rennes
    PhD student
    RESEARCH
    September 2020 - September 2023 (3 years)
    Rennes, France
    - Conducted original research on challenging problems with practical relevance in information theory and graph theory. Derived new theoretical results and presented them at international conferences to leading researchers.
    - Refined technical writing and oral communication skills. Developed strong efficiency and subject-matter expertise, with a focus on staying up to date with recent advances.
    - 6 published articles: 3 international conferences (IEEE), 2 national conferences, 1 journal article.
    - Teaching at the University of Rennes: 138 hours.
    Information Theory Statistics Mathematical Optimization Graph Theory
  • University of Fribourg
    Contact graphs of paths in a 2D-grid
    RESEARCH
    September 2019 - August 2020 (11 months)
    Fribourg, Switzerland
    Internship done at Decision Support & Operations Research Team.

    Scientific research activities: deepen the understanding of problems, develop new theoretic results, gain in scientific autonomy. Numerous oral presentations of the results, including two seminars and one international conference.

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Education

  • PhD
    IRISA
    2023
    Information Theory & Graph Theory
  • Master of Mathematics
    ENS Paris-Saclay
    2019
    M2 Optimization

Certifications

  • Cambridge English C1 Advanced (CAE)
    Cambridge Assessment English
    2017

Skill set

Categories