Software Engineer (C++)

About the job

• Design, develop and maintain embedded software in C++ for STM32 and nRF54 series devices on bare-metal (legacy) and Zephyr RTOS
• Implement and optimise firmware for resource-constrained, ultra-low-power devices
• Collaborate with hardware engineers to define interfaces and system architecture in partnership with senior engineers
• Write clean, maintainable, well-documented code and participate in code reviews
• Support product testing, validation, and certification
• Contribute to technical documentation and user guides

• Proficiency in C++ (or strong programming skills with willingness to learn modern C++)
• Experience with modern software workflows (Agile/Scrum, Git, CI/CD)
• Scripting skills in Python and bash
• Professional English proficiency
• French at minimum B2 to integrate with the team
• Valid work authorization/visa status
• Exposure to IoT products and edge devices
• Low-level interfaces: UART / SPI / I²C
• Ultra-low-power design techniques and power profiling
• LPWAN and related protocols: LoRaWAN, MIOTY, LwM2M, MQTT
• Cellular (e.g., LTE-M/NB-IoT) or BLE experience
• Experience in cyber security 

• Work-life integration
• Pension scheme
• Employee discounts
• Attractive remuneration system
• Flexible working hours
• Good development opportunities
• Health initiatives
• Mobile working