Principal Firmware Design Engineer

Responsibilities

• Architecture, design, development, and deployment of Zephyr-based firmware for hyperscale server and rack management platforms
• Develop and maintain device drivers, subsystems, and middleware layers for sensors, connectivity, power management, storage, and peripherals
• Design and implement robust and scalable firmware interfaces for telemetry, power/thermal controls, remote manageability, and firmware update infrastructure
• Perform board configuration (DTS, Kconfig, build system) and debug low-level issues
• Collaborate with hardware teams and ODM partners through all phases of the design and development lifecycle
• Implement secure boot, firmware update mechanisms (MCUboot, DFU), and over-the-air (OTA) functionality
• Develop automated unit tests, integration tests, and hardware-in-the-loop testing using Zephyr’s testing frameworks
• Guide and support integration of firmware into CI/CD pipelines
• Debug complex hardware/firmware/system issues using JTAG/SWD, logic analyzers, and Zephyr tracing/logging systems

Requirements

• Bachelor’s or Master’s degree in Electrical Engineering, Computer Engineering, Computer Science, or a related discipline
• 5+ years of hands-on experience in firmware development
• Hands-on experience with Zephyr RTOS, including device tree, Kconfig, board configuration, and driver development
• Experience with ARM Cortex-M or similar MCU architectures
• Solid understanding of SPI, I²C, UART, CanBus, PWM, GPIO, interrupts, DMA, and other low-level interfaces
• Familiarity with version control (Git), CI/CD workflows, and code-review practices
• Strong debugging abilities with embedded hardware and software tools
• Experience with code static analysis tools and vulnerability scanners
• Experience with system-level debug tools such as logic analyzers, JTAG, and GDB

Preferred Qualifications

• Experience contributing to open-source RTOS projects, ideally Zephyr
• Background in networking stacks supported by Zephyr
• Knowledge of secure firmware architectures, trusted execution environments, or cryptography libraries
• Experience with MCUboot, OTA pipelines, or secure firmware provisioning
• Proficiency with Python for automation, tooling, or testing

About the Company

Graphcore is a globally recognized leader in Artificial Intelligence computing systems, designing advanced semiconductors and data center hardware to drive AI innovation.