Jeff
Hägerman
I work the full stack — from schematic to firmware, from bare metal to cloud infrastructure. I love tackling hard problems, building things in the open, and chasing whatever new tech catches my attention.
~ uname -a
Linux embedded-dev 6.x #1 SMP x86_64 GNU/Linux
~ cat /proc/identity
jeff.hagerman — hardware & software
~ cat skills.txt
~ git log --oneline
f1a3c2e add LoRa sensor firmware
9b72d44 deploy k8s ingress controller
3e51a08 route PCB fan controller v2
a3f21bc ship redmine-cli v1.0
~
Embedded Systems
From bare-metal firmware to RTOS applications. Custom drivers, low-power design, and real-time control — C, Rust, Zephyr, FreeRTOS, esp-idf.
Hardware Design
End-to-end hardware: schematic capture, PCB layout, 3D enclosure design, and prototype bring-up. KiCad for boards, FreeCAD for cases.
Infrastructure
Building and running reliable infrastructure. Containerised services, CI/CD pipelines, and Linux systems that stay up.
Open Source
Shipping CLI tools, automation utilities, and libraries in the open. If it scratches an itch, it gets a repo.
Full Stack
HW → SW
100%
Open Source
3+
PCBs Designed
∞
Problems Solved