I'm a software engineer who has contributed to both large projects working with multiple coordinated teams and small projects (for example as single person greenfield projects.) I'm capable of quickly jumping into large code bases in multiple languages to extend and maintain them as well as starting projects completely from scratch. I've worked on large distributed systems with tight service level agreements.

As a rapid learner and serial autodidact. I enjoy learning new languages and technologies and pick them up very quickly. I've seen everything from heavily declarative DSLs to abstract functional languages and enjoy new challenges.

Career highlights

Technical Skills

Software Development

Pytorch (custom model architecture and training)
C (GCC/clang, Ken/8c on plan9, avr-GCC, MPLab)
C++ on Linux and Windows
Golang and SQLite3
Oracle with replication
C#, scheme
Concurrent programming with goroutines, pthreads, win32
Assembly (pic18, avr, 6507, Z80, 8086, AMD64)
Scripting languages (bash,awk,rubby,perl,JavaScript,FORTH,R)
Micro controllers (pic, at-mega, atxmega, arm (Freescale Kinetis, TI OMAP, STM 32), RISC-V)
python,tkinter,numpy,unittest,pyserial
Instrumentation (valgrind) and GDB (with/without RSP)
Always writes unit tests (jasmine, harnesses for embedded code)
Parsers and Lexers from scratch and with parser generators (YACC) in multiple languages
Familiar with many large scale application architectures including REST, ETL
Devops/deployment automation in puppet 3-7(including puppet rspec), RPM, Alpine, Docker, Terraform and Ansible

Data, Science, and AI

Professional and academic lab experience
Standard office and publishing tools including Excel, GROFF, and LaTeX.
Modeling and data analysis of large high performance systems
Quantitative modeling of finance and economic data
PyTorch
Strong applied math skills in Linear Algebra, Calculus, and Probability
Custom LLM training and inference software based on GGML
Self hosted custom foundation Large Language Models
Computer Vision with OpenCV and Neural Networks

Unix-like Environments

Linux, Mac OS, OpenBSD, Plan9, and QNX Both use and C, C++, Objective C, and Python application development
Common Unix shell tools (busybox and GNU)
OpenSSH, THTTPD, OpenSMTPD, dovecot
Unix networking debugging and filtering tools (pf, tcpdump, inetd, nc)
Buildroot and custom Linux based OSes with busybox
Makefiles and complex build system (buildroot, kconfig, bespoke recursive Makefiles)
Both Git and Mercurial (RCS ci/co long ago)
Asciidoc, Pandoc, LaTeX, GRoff, WikiML, LibreOffice
Configuration languages: GNU LD scripts, guile, XML/XSLT, uboot, device tree script
XML starlet
Docker and LBU (for personal computers)
Package manager spec files (RPM and apk)
Nagios
Deployment Automation: Terraform, Puppet, Ansible
Verilog (ICEStorm)
Metasploit
nmap
OpenSSL and OpenSSH (both CLI and API)
OpenLDAP
Firewalls: PF, iptables, familiarity with Linux ipxfrm code
Open Source CAD tools (Xcircuit, Gschem, XPCB)
DNS utilities (bind, dig etc.)
Have done extensive work with complex build systems including but not limited to: kconfig,buildroot,cmake,gradel,gem,pypi,docker and jenkins

Work Experience

Cisco (2024-Present)

I am a software engineer in the "Common Security Module team" Which maintains internal forks of OpenSSH and OpenSSL to support cisco software.

Development of internal SSH and OpenSSL software (C, Unix, cryptography,
Development and support of deployment automation infrastructure (groovy, ansible, openstack, python)
Cross organizational coordination and auditing of security requirements
The Go to guy for debugging difficult to solve problems caused by dynamic interactions of Linux software from outside groups

Verisign (2020-2023)

I was a software engineer on the team responsible for high availability global scale DNS TLD registry/resolution products including global reverse DNS, .gov/.com/.net/ and country TLDs.

Worked on global scale internet facing applications
ETL style C++ Oracle Golden Gate Application with many subprocesses
Nagios monitoring
troubleshooting of proprietary libraries and specialized tools written in C++, Perl, and shell
Heavy use of Unit tests
"One button" deployment automation
CI/CD migrations
Specialized high throughput network server applications

Consulting (2014- 2024)

Prior to working at Verisign I've engaged in numerous successful freelancing projects

Distributed, Delay Tolerant File system for Windows
Wireless agricultural Monitoring system
Custom Embedded Firmware (Linux based and custom executives)
Complex Computer vision Applications
Custom Laser tag equipment (firmware, electrical, and mechanical design)
Distributed Control system for Materials lab (both embedded firmware and Windows GUI application)

Undergraduate technical intern for Verisign( June 2012 - December 2012)

Mostly internal infrastructure support for developers.

Debugged and fixed build system and features for C++ graphical remote desktop software.
shell scripts to help coordinate VM management
Modified Free-BSD FORTH boot loader scripts to allow booting an alternate kernel.

Software Engineering Intern for Tridium/Honeywell (summers 2016,2017,2018)

Embedded Systems and Application programming for the building automation business.

Rewriting Java GUIs in HTML5
Worked on very disciplined agile team
unit tests in jasmine
WiFi regulatory compliance test firmware
(personally handed off to Underwriter's Laboratories)
Examination of plastic deformation with finite element analysis software
QNX and Linux Firmware image generation
Porting software between (both ways) QNX and GNU/Linux
Evaluation of QNX VPN software
Evaluation of extremely small JVMs on arm micro controllers

Stephen Wiley (Software Engineer)