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Sébastien MestralletSM

Sébastien Mestrallet

C++ | Rust | Python | TypeScript Developer

€450/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sébastien

Looking for a C++, Rust, Python, TypeScript developer? Do you have a need for desktop software, compiled software, scripts, or web interface development?

I am an experienced software developer, I enjoy creating modern, scalable, and performant software tools, and I have applied my skills to both industry and scientific applications:
- Ingenico (world leader in payment terminals)
- SKF (world leader in ball bearings)
- CEA-List (major research center in new technologies)
- CEA-ISAS (major research center on energy)

My commitments: daily progress reports, high responsiveness, and reasoned use of generative AI.

I undertake various types of projects:
  • Scientific computing development (scripts, software)
  • Desktop software development
  • Embedded software development
  • 3D visualization/modeling development
  • Statistical data visualization development
  • Graphical interface creation (Qt, ImGui, Web)
  • Signal processing
  • Python notebook creation
  • Transitioning Jupyter notebooks to Marimo notebooks
  • Custom Python widget creation (Anywidget)
  • Taking over and industrializing AI-generated software prototypes (vibe-coding)
  • User documentation
  • Developer documentation

Have a need, a project? → let's just discuss it!
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 10km), Palaiseau (up to 10km)

Experience

  • CEA-ISAS
    PhD Student in Numerical Geometry
    October 2021 - October 2024 (3 years)
    Saclay, France
    Thesis subject "Robust polycubes for block-structured hexahedral meshing"Institute of Science for Energy Transition (ISAS)
    Software Engineering for Simulation Department (SGLS)
    University Paris-Saclay, Doctoral School 580: Information and Communication Science and Technology
    Thesis defense on November 28, 2024
    https://theses.fr/2024UPASG087
    C++ Scientific Visualization CMake glTF graphical interface
  • CEA-List
    Intern in Software Modeling
    March 2021 - August 2021 (5 months)
    Grenoble, France
    High-level modeling of a variable-precision processor

    System-on-Chip and Advanced Technologies Laboratory (LSTA)
    Digital Integrated Circuits and Systems Department (DSCIN)
    C++ RISC-V
  • SKF
    Intern in Vibrational Analysis / Signal Processing
    October 2019 - January 2020 (3 months)
    Valence, France
    Measurement, acquisition, and digital processing of vibration signals for ball bearing defect detection.

    Development of algorithms on MATLAB and design of a measurement chain on a test bench.
    Matlab graphical interface Signal Processing

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Education

  • PhD, Computer Science and Applied Mathematics
    Université Paris-Saclay
    2024
    Doctorat, Informatique et mathématiques appliquées
  • Electrical Engineering Degree
    INSA Lyon - National Institute of Applied Sciences of Lyon
    2021
    Génie Électrique

Skill set

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