Engineering

Software, Firmware

{ Embedded, Desktop, Enterprise} Linux

IT { Infrastructure, Security }

Programming

C, C++, C#, Bash, MATLAB

css, html, Perl

Linux

Embedded, {2.4, 2.6-5.x} Kernels

RTAI, RTOS, Device drivers, ext{3,4}/encfs

Custom/LFS, Yocto, Gentoo, CRUX

Networking

TCP/IP, USART/RS-232, CAN, I2C, I2S, raw sockets

dns/bind/tls, dhcp, samba/cifs, apache

Windows DCs, iptables/firewalls, DFS, LDAP

Hardware

Arm/i.MX7, AT32UC3C/at90, FTDI, WIZnet

x86/amd64, ppc/mpc603e

Technology

Algorithms, Optimization, Correctness,

Comm/Sockets, Infrastructure, Simulation,

Processes

System architecture, Release management

Agile, Subversion, Git, Markdown

IDEs

Visual Studio, Atmel Studio

gcc/make/gdb

Interests

Python, Julia, Haskell, javascript

Android Studio

Projects

Custom Yocto Linux OS Design & Dev

implement NXP high assurance boot
custom bootloader, dtb, kernel, eFUSES
security via HAB/OPTEE/TA
extended to all boot elements
extended to rootfs via dm-verity
dual boot fault-tolerant upgrade
custom V4L2 camera driver
revision and release control
support eMMC/mii phy, JX-F22 camera
debug POR, stability, watchdog, tamper, USB
debug DVFS, NXP SNVS

Custom Embedded Linux OS Design & Dev

custom 1MB+5MB footprint
custom bootloader
strict RO FS for stability/correctness
limited RW config partition
extended RW data-only partition
dual boot fault-tolerant upgrade
real-time device driver(s)
flex upgrade via bootloader, USB, network
live, in-place, upgrade option
watchdog, printer support, etc.
revision and release control
live documentation
concurrent support for N hw platforms
concurrent support for M personas
concurrent support for P configurations
bootloader selectable inittabs
interprocess communication(s)
serial communication(s)
network communication(s)

Custom Zeroconf Full System Build Design & Dev

end-to-end automated build from naive host
fully automated via top-level bash
downloads, patches, opensource tarballs
builds host-independent build environment
builds host libraries
builds cross-compiled target libraries+apps
builds cross-compiled target kernel
builds custom target rootfs
builds automated OSS compliance iso image
builds target binary images
builds target USB upgrade key images
builds run-once special USB keys
build logging
web interface with revision and release control
web interface with automated documentation

Product Embedded Development

gen1 FTIR EtOH Monitor, embedded Linux
gen2 FTIR EtOH Monitor, embedded Linux
gen3 FTIR EtOH Monitor, embedded Linux
gen4 Solid-State EtOH Monitor, bare metal
gen5 Solid-State EtOH Monitor, bare metal
gen1-3 supported by single build, single source
gen4-5 supported by N builds, single source
end-to-end automated builds

Win10 Dev/App for Hardware Command & Control

single PC application supporting ALL devices
N operating modes pending use scenarios
option to commandeer slave target instrument
clinical data collection modes
demonstration and sales modes
real-time instrument monitoring
real-time instrument display mirroring
various levels of direct control

Custom Intranet Design & Dev

automated markdown documentation
software repository interface
bug/task interface
device configuration interface
dynamic recoverable admin code interface
time-limited admin recovery codes
custom live dev commit interface

Linux Computing Cluster Design & Dev

400+ computing nodes
build engine
management and control scripts
visual web based interface
network architecture
load design
sql database
MATLAB interface

Algorithm Optimization

MATLAB
MATLAB to C
C, C++, C# duplicity
time-domain optimization
space-domain optimization

Airborne Laser (ABL) Simulation Design & Dev

simulation architecture
custom MATLAB libraries
monty carlo run options
fully isolated parameter db
automated code V&V
automated live analysis scripts
develop and test algorithms

Personal Dev Style

develop generic, reusable, independent libs
constrain product-aware code to high-levels
code should look clean, visually decipherable
code should be fully alive, or dead
develop and follow processes and solutions
convert short-term hacks to solutions
consistency, cleanliness, and correctness
fully automated reproducibility
documentation should be fully alive/live
maintain a single authoritative source for all
strict reproducibility everywhere