Embedded Software Engineer (IoT)

TL;DR

Embedded Software Engineer (IoT): Integrating and enabling key platform components in large embedded codebases with an accent on Zephyr RTOS and embedded security. Focus on system-level integration, upstream contributions to Zephyr and Trusted Firmware-M, debugging complex issues, and optimizing for performance, reliability, and energy efficiency on Cortex-M platforms.

Location: Rennes, France (hybrid with partial home working)

Company

Leading innovator in low-power wireless connectivity and highly integrated SoCs for IoT applications in smart home, industrial IoT, and smart cities.

What you will do

• Drive system-level integration of embedded software on Cortex-M platforms
• Contribute to upstream projects like Zephyr and Trusted Firmware-M through development, reviews, and design discussions
• Work in and modify large, complex codebases while debugging system-level issues
• Enable and integrate security features such as secure boot and cryptography
• Collaborate with hardware and platform teams to align software with silicon capabilities
• Tune code for optimal resource utilization, reliability, performance, and energy efficiency

Requirements

• 5+ years of experience in embedded software development
• Strong proficiency in C and solid embedded system fundamentals
• RTOS knowledge (FreeRTOS, Zephyr)
• Good understanding of embedded security concepts (secure boot, key management, cryptography, trusted execution environments)
• Fluent written and spoken English
• Master-level degree in Computer Science, Software, Electrical Engineering, Signal Processing or similar with software focus
• Ability to contribute ideas, build consensus, and drive tasks to completion

Nice to have

• Knowledge of digital wireless and signal processing
• Experience with AI-powered tools and technologies

Culture & Benefits

• Work in a highly-skilled, tight-knit, cross-functional team with chip designers and customer support
• Modern office in vibrant Rennes city center near metro line B
• Meal vouchers, employee referral program, wellness program
• Paid days for philanthropy/volunteering
• Strong work/life balance in a welcoming and fun environment