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Julien RouxJR

Julien Roux

Automotive Sport Performance Engineer

€600/day
Indianapolis, US
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

Looking to accelerate your developments, automate your analyses, or improve the reliability of your simulation models? I support engineering teams in their simulation, data analysis, and technical tool development projects using MATLAB and Python to enhance their efficiency and decision-making.

Vehicle Performance Engineer with over 13 years of experience in Formula E, IMSA, and IndyCar, I have contributed to programs that won the Indianapolis 500 (2025 and 2026), multiple IndyCar championships, and a Formula E world title.

My added value lies in my ability to transform complex data into concrete solutions: developing models, correlating simulation/testing, optimizing performance, automating workflows, creating engineering tools, and providing technical decision support.

I regularly work on projects involving:
  • Simulation and modeling
  • Data analysis and visualization
  • MATLAB and Python development
  • Engineering process automation
  • Optimization of algorithms and internal tools
  • Model validation and correlation.

I enjoy tackling complex technical challenges where a rigorous, pragmatic, and results-oriented approach saves time, improves analysis reliability, and enhances performance.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Spanish

    Conversational

Remote only
Primarily works remotely

Experience

  • Kinematips
    Founder - Vehicle Performance Engineer
    April 2024 - Today (2 years and 3 months)
    Paris, France
  • Honda Racing Corporation (HRC)
    Vehicle Performance Senior Engineer
    AUTOMOBILE
    October 2022 - Today (3 years and 9 months)
    Indianapolis, IN, USA
    IMSA Sportscar Championship
    - Utilizing real-world data for model calibration and predictive design optimization.
    - Gained detailed understanding of tire physics through detailed studies of tire performance and analysis and improvements in tire model correlation.
    - Delivered essential trackside support, including pre-event preparation in the DiL, chassis setup optimization, and energy saving optimization.

    IndyCar Series
    - Engaged in integrating a hybrid powertrain, optimizing the impact on the chassis performance envelope, and using it as an extra tool to tune the car's stability and braking performance.
    - Pioneered the formulation of hybrid performance strategies for HRC USA customers, enhancing their understanding and application of hybrid technology to improve competitive performance.
  • Nissan Formula E Team
    Lead Performance Engineer - Group Leader
    July 2019 - August 2022 (3 years and 1 month)
    Le Mans, France
    Energy Management Group Leader
    - Optimized saving strategy against energy storage and tire limitations, directly influencing race performance.
    - Led the development of embedded control systems for superior energy management, which significantly contributed to the team's second-place finish in the Manufacturers ranking in 2020.
    - Optimized DiL and offline simulation analysis, which resulted in efficient saving strategies.
    - Developed innovative driver assistance with a statistical gain of around 0.2s per lap.
    - Managed and mentored junior engineers, integrating them into the team.
    - Organized a weekly project review meeting with race performance team members and the manufacturer as part of the V-model software development process.
    - Attended weekly project reviews between group leaders and Head of Engineering.

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Education

  • Master of Engineering
    ISAT
    2017
    Master of Engineering - MEng, Automotive Engineering

Skill set (18)

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