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Jean-Baptiste BillardJB

Jean-Baptiste Billard

EMS & BESS Engineer

€800/day
Bordeaux, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jean-Baptiste

I design EMS algorithms and simulation tools for multi-MWh BESS systems — from cell level to full AC system. For 12 years, I've worked at the intersection of system engineering, physical modeling, and software development. At SAFT (TotalEnergies), I led the simulation team that produces the reference tools used to size, validate, and sell our storage solutions in European, Asian, and American markets. Specifically: C++/Matlab platform modeling BESS from cell to AC system level, integrated EMS logic, battery aging models, thermal constraints, financial optimization.
What I bring to freelance missions:
  • EMS algorithm development (dispatch, PV-shifting, trading, FCR/aFRR)
  • BESS performance simulation and sizing/upscaling studies
  • Techno-economic modeling and long-term ROI
  • Python simulation and optimization tools, turnkey deliverables
I work fast, deliver production-ready tools, and can interface with R&D teams as well as sales teams.
Available for consulting, development, or technical expertise missions — remote or on-site.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Bordeaux (up to 10km)

Experience

  • SAFT
    ESS Simulation Team Lead
    ENERGY AND UTILITIES
    January 2022 - January 2025 (3 years)
    Bordeaux, France
    Managed a simulation and performance team for multi-MWh battery energy storage systems (BESS), intended for photovoltaic production smoothing and international market trading applications.
    • Development and design of a performance tool for BESS (Matlab & Python)
    • Led feasibility studies on energy management (EMS) and BESS capacity scaling
    • Provided technical and strategic support to sales teams in client discussions and tender responses
    • Development and execution of thermal and electrical simulations at AC system, module, and cell levels, to guide system design decisions: HVAC sizing, airflow distribution, and thermal management strategies in extreme ambient conditions
    • Development of internal solutions and tools to accelerate sales prospecting and quoting processes
    Matlab/Simulink EMS Photovoltaic BESS Energy Simulation
  • THALES ALENIA SPACE
    Thermal Engineering
    AVIATION AND AEROSPACE
    July 2016 - December 2021 (5 years and 5 months)
    Cannes, France
    Thermal design of telecommunication satellites, covering the entire product lifecycle from design to testing and prototyping. Design, simulation, and validation of the thermal architecture of STRATOBUS, a 140-meter long stratospheric airship.
    • Collaboration with a multidisciplinary team (Mechanical, Photovoltaic, Power Bus, Battery) to develop optimal product architectures meeting all requirements
    • Optimization of thermal solutions using ANSYS Fluent and Icepack, minimizing product costs
    • Definition and development of thermal requirements, including the development of ad hoc MATLAB scripts to support trade-off decisions during final specification definition
    • Design, management, and execution of a thermal test plan to validate the design
    • Development of thermal algorithms in MATLAB and management of their integration into product firmware for thermal management
    Matlab/Simulink Thermal management
  • SAFRAN Engineering Service
    Aerothermal Engineer – CFD Simulations
    AVIATION AND AEROSPACE
    July 2014 - May 2016 (1 year and 10 months)
    Pau, France
    Aerothermal studies of compressors and turbines for SAFRAN TURBOMECA.
    Study of aeronautical performance of compressors under LINUX
    Aerothermal study of high-pressure turbines on ANSYS Workbench/Fluent
    Thermal management Numerical Simulation Linux Ansys Fluent Turbines

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Education

  • Aeronautical Engineer
    ENSMA Ecole Nationale Supérieure de Mécanique et d'Aérotechnique
    2013
    Ingénierie Aéronautique

Skill set

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