Firmware Engineer – Secure IoT on ARM Cortex‑M, Fast Growth

IC Resources; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

IC Resources is partnering with a fast-scaling deep tech semiconductor company in London to recruit an experienced Firmware Engineer. You will own robust firmware development across the full lifecycle, from pre-silicon validation to post-silicon bring-up, ensuring security and quality in cutting-edge hardware.

The role focuses on ARM Cortex-M based MCUs, implementing unit tests, collaborating with hardware and architecture teams, and delivering secure, well-documented APIs for connected devices.

Qualifications

• Bachelor’s or master’s degree in electrical engineering, computer engineering, computer science, or a related field.
• 5+ years of firmware development experience in embedded systems.
• Proven expertise with ARM Cortex-M processors and peripherals.
• Experience with IoT/networking stacks (e.g., TCP/IP, Bluetooth, Wi‑Fi, Matter, Thread).
• Strong API design and maintainable code skills.

Responsibilities

• Design, develop, and debug firmware for ARM Cortex-M based MCUs.
• Implement and execute comprehensive unit testing strategies to ensure code quality.
• Actively participate in both pre-silicon and post-silicon validation and bring-up activities.
• Collaborate closely with hardware and architecture teams to define specifications, troubleshoot issues, and optimize performance.
• Contribute to the design and implementation of secure firmware features, including secure boot mechanisms.
• Develop high-quality, well-documented APIs and maintain strong design principles throughout the firmware development process.
• Work effectively within a collaborative team environment, sharing knowledge and best practices.
• Develop and integrate IoT/networking stacks for connected devices.

Skills

Embedded systems

ARM Cortex-M

Firmware testing

IoT networking stacks

Secure firmware

Education

Bachelor’s or Master’s in Electrical/Computer Engineering or CS

Job description

IC Resources is partnering with a fast-scaling deep tech semiconductor company in London to recruit an experienced Firmware Engineer. You will own robust firmware development across the full lifecycle, from pre-silicon validation to post-silicon bring-up, ensuring security and quality in cutting-edge hardware.

The role focuses on ARM Cortex-M based MCUs, implementing unit tests, collaborating with hardware and architecture teams, and delivering secure, well-documented APIs for connected devices.