Principal Firmware Design Engineer

Graphcoreis a globally recognized leader in Artificial Intelligence computing systems. The company designs advanced semiconductors and data center hardware that provide the specialized processing power needed to drive AI innovation while delivering the efficiency required to support its broader adoption.

As part of the SoftBank GroupGraphcoreis a member of an elite family of companies responsible for some of the worlds most transformative technologies. We are opening a new AI Engineering Campus in Austin which will playa central roleinGraphcoreswork building the future of AI computing.

We are looking for a Principal Firmware Design Engineer with strong experience in the Zephyr RTOS to design develop and maintain embedded software across server and rack-scale platforms primarily targeted for hyperscale data center environments. The ideal candidate has deep knowledge of real-time embedded systems SoC architectures low-level drivers and modern firmware development workflows. You will work closely with hardware software and product teams to deliver high-reliability firmware on resource-constrained platforms.

RESPONSIBILITIES

• Architecture design development and deployment of Zephyr-based firmware for hyperscale server and rack management platforms. This includes kernel configuration board bring-up and subsystem integration.
• 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. This includes schematic reviews validation of interfaces and supporting board bring-up and hardware validation.
• Implement secure boot firmware update mechanisms (MCUboot DFU) and over-the-air (OTA) functionality when required.
• Develop automated unit tests integration tests and hardware-in-the-loop testing using Zephyrs testing frameworks (Twister ztest).
• Guide and support integration of firmware into CI/CD pipelines including automated builds regression testing static analysis and deployment workflows.
• Partner with hardware BMC/RMC security systems and validation teams to drive alignment across the entire platform stack.

• Debug complex hardware/firmware/system issues in lab and production environments. Provide debugging and root-cause analysis using tools such as JTAG/SWD logic analyzers and Zephyr tracing/logging systems.

REQUIREMENTS

• Bachelors or Masters 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.

DIFFERENTIATORS

• 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 used in embedded systems.
• Experience with MCUboot OTA pipelines or secure firmware provisioning.
• Proficiency with Python for automation tooling or testing.

We welcome people of different backgrounds and experiences and are committed to building an inclusive work environment that makes Graphcore a great home for everyone. We are an equal opportunity employer and want to build a work environment where everyone is happy productive and respectful so they can do their best work. If you have a disability or additional need that requires accommodation just let us know.