Kellen Carey
Farm Hand at Emerald City Pet Rescue
Vashon, Washington, United States
Summary
👤
Senior🎓
Top SchoolKellen Carey is a versatile operations professional and embedded systems contributor with 11 years of experience spanning logistics leadership at Thermo Fisher Scientific and hands-on farm operations at a sanctuary in Vashon, WA. Trained in Business Information Systems and Supply Chain Management, he has moved between operational leadership roles and practical technical work, bringing process discipline and attention to detail to every environment. On GitHub he contributes low-level Rust and firmware improvements—adding timers, GPIO/SPI tweaks, and USB HID support for projects like nrf-hal and ZMK—showing a strong affinity for embedded IoT and hardware-adjacent software. Comfortable balancing coordination, inventory, and manufacturing support with embedded development, he combines pragmatic logistics problem-solving with the precision required for peripheral-level firmware work. Notably, his recent industry pivot demonstrates adaptability and a quick aptitude for learning across very different domains.
11 years of coding experience
La Costa Canyon High SchoolBusiness Information Systems, Operations & Supply Chain Management, Graduated, Business Information Systems, Operations & Supply Chain Management, Graduated at California State University, Chico
Github Skills (18)
timers10
firmware10
timer10
bluetooth-le10
microcontroller10
zephyr10
gpio10
sys10
bluetooth10
embedded10
rust10
hal10
nrf528409
c119
spi9
Programming languages (5)
Github contributions (5)
zmkfirmware/zmk
Aug 2020 - Oct 2020
ZMK Firmware Repository
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:4 reviews, 18 commits, 7 PRs in 2 months
Contributions summary:Kellen's primary contributions focus on the ZMK firmware for a mechanical keyboard, specifically the Microdox shield. They added code to handle HID reports over USB, incorporating a semaphore for synchronization. The user implemented a working keyboard shield, including defining the matrix layout within the dtsi file. Furthermore, they updated and improved setup scripts for configuring the keyboard.
nrf52mechanical-keyboardfirmwarebluetoothwireless
nrf-rs/nrf-hal
Oct 2019 - Oct 2019
A Rust HAL for the nRF family of devices
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:9 commits, 1 PR, 6 comments in 2 days
Contributions summary:Kellen's contributions primarily involve modifications to the `nrf-hal` repository, a Rust HAL (Hardware Abstraction Layer) for the nRF family of devices. Their work includes adding support for periodic timers, reverting to and updating typestate approaches, and adjusting the API. They also addressed backwards compatibility and made minor API changes. Furthermore, they modified GPIO and SPI implementations demonstrating a focus on low-level hardware interaction and peripheral control.
nrf52nrf52840rustbluetoothmicrocontroller
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