HID Global, Ltd.
Full-timeCardiff, Wales
October 2025 — October 2026
Senior Firmware Engineer
Oct 2025 — Oct 2026Architected and built secure solutions for Zephyr and embedded Linux systems.
02 — Engineering
Embedded Software and Systems Engineering
Sean is a skilled embedded software engineer and maintainer of the CPU frequency scaling subsystem in Zephyr RTOS.
CPU frequency scaling
Open-source contribution to Zephyr RTOS
Sean designed a way for the RTOS to intelligently and transparently apply dynamic voltage and frequency scaling (DVFS) to a processor at runtime, according to user-defined policies. This allows a user's system to intelligently scale its performance and maximise the desired metric of the engineer's system.
Upstream activity
Pulled live from GitHub
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Selected contributions
CPU frequency scaling
The subsystem itself — policies, metrics, P-state drivers and devicetree bindings.
Pressure policy
A scaling policy driven by system pressure rather than raw load.
Settings: ITS backend
Persistent settings backed by TF-M protected storage. He is a listed collaborator on this backend.
Alert Notification Service
A Bluetooth GATT service implementation added to the host stack.
Career
Most recent first.
Analog Devices, Inc.
Full-timeVancouver, British Columbia
June 2024 — August 2025
Embedded Software Engineer
Apr 2025 — Aug 2025Built customer-facing demos and presented them globally.
Associate Software Engineer
Jun 2024 — Mar 2025Developed baremetal SDKs and Zephyr integration for new SoCs; extended Zephyr's Bluetooth LE profiles.
Bronze Impact AwardJanuary 2025
“For exceptional effort in the integration of Bluetooth software stack, ZephyrOS and reference software system … allowing for the aggressive release schedule of our SDK.”
Bosch
Co-opRenningen, Baden-Württemberg, Germany
May 2023 — December 2023
Embedded Systems Engineering, Quantum Sensing
May 2023 — Dec 2023Prototyped VHDL and firmware for an FPGA-based sensor control board driving a space-grade quantum gyroscope, built for a CubeSat mission. Part of a publicly funded collaboration between DLR, Q.ANT and Bosch.