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Aurélien FillauAF

Aurélien Fillau

Embedded Systems - IoT expert (Lyon)

€500/day
3 projects
Lyon, FR
8-15 years

Average response time: 4 hours

Freelancer profile translated to English.
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About Aurélien

Trained engineer, specialized in signal processing, I am involved in low-level embedded software development on microcontrollers (STM32, Nordic Semiconductor, NXP, Texas Instruments, ESP32...) and on highly constrained systems, particularly in terms of energy consumption.
I have a strong interest in IoT projects using various radio technologies: LPWAN (LoRa, Sigfox), Bluetooth Low Energy, IEEE 802.15.4, LTE-M... with a particular focus on low-power and system optimization issues.

Embedded developer for over ten years, I guarantee rigorous, documented work that complies with coding standards (MISRA C and project guidelines). I place particular importance on code readability, maintainability, and robustness.

I also have advanced skills in electronics (schematics, routing) and 3D mechanical modeling. I have produced several mechanical parts up to industrialization, including the design of injection-molded parts and mold preparation.

I am used to developing low-level drivers for numerous buses and peripherals: I²C, SPI, QSPI, RS232, RS485, 1-Wire, flash memories (Macronix), touch sensors (IQS263), etc.


Microcontrollers:

- ST (STM32F1XX, STM32F4XX, STM32L0XX , STM8L0XX)
- Nordic Semiconductor (nRF52840, nRF52832, nRF52810)
- ESP32
- Texas Instruments ( CC1310, MSP430 ...)
- Microchip
- NXP (KL03)

RTOS :
- Zephyr
- FreeRTOS
- RIOT OS
- TI RTOS
- Embos

IDEs:
- Segger Embedded Studio
- IAR for Embedded Workbench
- Code Composer Studio
- MPLABX
- SiLabs IDE
- STM32 Cube IDE

CAD/Routing :
- CircuitMaker
- Fusion 360

Available Hardware :
- Spectrum analyzer,
- Oscilloscope
- Rigol DP711 stabilized power supply
- Fluke 287 / Metrix MX3291 multimeter + various
- Binocular microscope
- Weller soldering station
- Hot air station
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Lyon (up to 50km), Périgueux (up to 10km), Bordeaux (up to 10km)

Experience

  • Teledyne
    Embedded developer
    INTERNET OF THINGS (IOT)
    March 2025 - Today (1 year and 3 months)
    Lyon, France
    Responsible for embedded development on a BLE module running under Zephyr, I handled the design and implementation of the Bluetooth Low Energy interface for an industrial gas sensor. My responsibilities covered software integration, mobile integration, and system integration.
    NRF52 STM32 BLE5 Zephyr CI/CD
  • LupinDental
    Embedded software developer
    HEALTH AND WELLNESS
    June 2024 - September 2024 (3 months)
    Montpellier, France
    Development and code refactoring on the SAFETY board of a medical robot. Objective: ensure corrective maintenance of the firmware and complete porting of the project to CMake. Environment: STM32CubeIDE, C language firmware, STM32L0 target, UART and I²C protocols. Regulatory compliance: MISRA, NF EN 62304
    C STM32 IEC 62304 MISRA CMake
  • Jagger & Lewis
    Embedded software developer - Jagger & Lewis
    SPORTS
    April 2022 - July 2024 (2 years and 3 months)
    Development of a GPS / 4G LTE-M tracker for pets.

    - C language firmware
    - Target: NRF52840
    - IDE: IAR
    - Bootloader: FOTA over BLE / 4G
    - Radio layer: BLE / 4G LTE-M / NBIOT
    - TCP / MQTT protocol
    - External peripherals: Macronix Flash / IMU (LSM6DSO) / PMIC / Quectel
    - Advanced low power constraint

    Development of a Wi-Fi gateway for pairing and charging the tracker:

    - C language firmware
    - Target: ESP32
    - IDE: Visual Studio Code
    - RTOS: FreeRTOS
    - Bootloader: FOTA over HTTP
    - Protocol: TCP / MQTT

    Certifications:
    - Radio and EMC certifications passed

    Industrialization:

    - Design of test benches using CircuitMaker
    - Development of Python flash/test scripts
    ESP32 NRF52 LTE-M MQTT TCP/IP

Reviews

5.0

Out of 1 rating

W

Willy

ingénieur en électronique - Essilor International

Reviewed on 5/11/2026

Very good grasp of the project with a quick and relevant analysis of the existing code. The documentation produced is clear, complete, and easy to use. Pleasant exchanges throughout the mission, with constructive and appropriate solution proposals for the project's needs.

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Education

  • Signal Processing Engineer
    Grenoble INP, Phelma
    2011

Skill set

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