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Julien PonnouJP

Julien Ponnou

Embedded Software Engineer

€500/day
Montpellier, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

Passionate about new technologies, I am an electronics, robotics, and industrial computing engineer with about ten years of experience in embedded systems development. Curious, dynamic, and empathetic, I enjoy deeply understanding the technical and human needs of a project to propose reliable, high-performance solutions adapted to real-world constraints.

Throughout my experiences, I have worked in demanding environments with strong real-time and memory constraints. I have developed low-level drivers in C, set up bootloaders (U-Boot), and designed middleware in C/C++.
I have had the opportunity to work on various systems—VxWorks, STM32 RTOS, or embedded Linux (Buildroot, Yocto)—which has allowed me to master the complete embedded development chain, from hardware to application software.

I have also worked with numerous communication protocols such as UART, SPI, I²C, TCP/UDP, as well as IoT protocols like Wi-Fi or 4G.
Finally, my curiosity has led me to explore other areas of software development, particularly the creation of mobile or web applications using Qt, ReactJS/VueJS, and NodeJS, which allows me to have a global vision of connected systems.

Thanks to my background in electronics, I also have solid foundations in microelectronics, enabling me to collaborate effectively with hardware teams and optimize software integration.
  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Basic

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

Experience

  • Nystera
    Software engineering
    AUTOMOBILE
    September 2024 - Today (1 year and 11 months)
    Montpellier, France
    ➔ Programming a telemetry solution for racing cars (STM32, C, RTX).
    • Real time, multi-threaded environment with HAL.
    • UART, USB, Wi-Fi, 4G LTE, TCP (TLS) / MQTT(S), GPS protocols.
    • Visualization with Thingsboard through a custom Thingsboard TCP gateway in Python.
    • Asset management with Snipe IT.

    ➔ Programming a social platform for travelers.
    • Frontend (ReactJS), backend (NodeJS), DB (PostgreSQL), Docker.
    C STM32 Embedded Systems IoT 4G/LTE
  • Technology & Strategy
    Software engineering
    TRANSPORTATION
    February 2023 - August 2024 (1 year and 6 months)
    Montpellier, France
    ➔ Programming the displays for the rail transports in Paris (C/C++, Yocto).
    • Software architecture (onIT, Kubernetes, applications and IPC).
    • Complete architecture and design documentation, from the customer requirements (STB) to the proposed solution (STAL).
    C++ Kubernetes Docker Yocto Embedded Systems
  • Soledge
    Embedded Software Engineer
    TECH
    October 2019 - January 2023 (3 years and 3 months)
    Clapiers, France
    ➔ High-end audio embedded software development on Armadeus OPOS6UL(L)/IMX6UL(L) (C/C++, Linux/Buildroot).
    • Synchronization / Syntonization over PLC.
    • Software architecture.
    • U-Boot, device tree and drivers setting up.
    • Startup (/etc/init.d/ scripts) and configuration (UCI & filesystem) management.
    • Remote communication (SSH and remote SSH).
    • Roon/Optical SPDIF/Spotify protocols and restreaming support.
    • Multiroom management.
    • Test automation.

    ➔ App development to scan network and access the speaker webpage with its IP address.
    • Web app using Qt 5.14, based on Webview component.
    • Cross-platform compatibilities (Windows, Linux, Android, macOS, iOS).

    ➔ Web development to control speakers.
    • Frontend with VueJS.
    • Backend with NodeJS/ExpressJS.
    C C++ Linux Buildroot Vue.js

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Education

  • Engineering school, Polytech'Montpellier (ex ISIM)
    2010

Skill set

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