Brett T. Warden

Available for work

My résumé is available in the following formats:

I'm an electrical engineer with experience in embedded programming, UNIX/Linux development, Linux distribution engineering, Perl programming, web development, and electronics research. I'm currently available for work remotely, or in the Hillsboro/Beaverton/Portland, Oregon area. Please open my resume above for contact details.

Skills Include:

• Programming & Scripting: C | Perl | Python | Bash | JavaScript | Assembly (x86, PPC, MIPS) | Tcl
• Operating Systems: Linux (Yocto, Clear Linux, Red Hat, Ubuntu) | Embedded Linux | RTOS (Nucleus Plus) | macOS | UNIX
• Embedded & Architectures: X86 SoC (Atom) | ARM/XScale | PPC/MPC
• Networking & Protocols: I2C/I3C | SPI | CAN bus | MQTT | Z-Wave | PICMG/IPMI | PON | SNMP
• Tools & SCM: Git | GitHub | Jenkins | JIRA | ArtiFactory | GDB | Simics | Intel ITP

Portfolio

Professional

• Clear Linux tools, automation, and tests
  • Tooling to backport a specific commit from upstream to current package
  • Tooling to automate backporting a series of patches from the current packaged version to the specified upstream commit or HEAD
  • Implement layered config for kernel packages including pass-through support for `make menuconfig` and `make oldconfig` targets
  • Enable packaging multiple versions of Java libraries
  • Clear Linux network troubleshooting and diagnostics tool
  • Contributions to automated packaging tool
  • Enhancements to software update tool (swupd) and its tests
  • Hardening of boot manager tool and improvements to initrd handling, including early microcode loading
  • Customized DKMS to work with Clear Linux-provided kernels and automatically rebuild on kernel updates
• Video tutorial for adding kernel modules to Clear Linux with DKMS
• Clear Linux packaging
• Submitted upstream fix to LibreOffice to resolve build failure when linking against newer zxing library
• Removed bash-isms from systemd unit file for Clear Linux provisioned installer
• Conference speaker timer, with copy/paste support for agenda, to show a conference speaker how much time is left in their slot. Written in Javascript, with HTML and CSS. Runs completely offline from a static file.

Outside of work

• SVG::Barcode::UPCA -- Perl modules to generate UPC-A, UPC-E, EAN-13, and EAN-8 barcodes in SVG format
• Severe Weather Alerts (NWS) implemented in Perl, HTML, and JavaScript, using JSON for data exchange, XML and geodata from NOAA in the backend
• Implemented infrared (IR) control protocol driver for Arduino/Espressif platforms (ESP8266/ESP32) to control and receive data from Disney's Made With Magic/Glow With The Show interactive ear hats and magic wands. Written in C.
• Contributions to AREDN (Amateur Radio Emergency Data Network) project -- some Lua
• Diagnosis and fix, including live recovery of an unexpected error condition that brought down federated meshchat servers on regional AREDN mesh -- Lua
• Developed hardware interface for Dogecoin Pinball Machine -- hardware design and configuration of Tasmota firmware on an ESP8266 relay board
• Debugging, diagnosis, binary hot-fix, and targeted patch for a segfault in an open-source project
• Automatically generate and maintain several POI (Points of Interest) files for consumer GPS navigation devices