Engineering CV

Walter Spence, RPSGT Richmond, VA · walt@waltspence.com · LinkedIn · GitHub

I build and run AI agent systems and the software around them. Registered Polysomnographic Technologist with more than 20 years in sleep medicine and over 15,000 studies of every type, focusing on alternative therapies, with a specialty in pediatrics. I lead the hypoglossal nerve stimulation (HGNS) program at St. Mary’s Hospital.

Open to clinical and engineering roles, remote preferred.

AI agent systems and projects

Independent web developer and consultant

Web and AI agent systems · 2004 to present

Contract web development since 2004; for the last five years, consulting and individual-contributor work on web and AI agent systems alongside sleep medicine.
zap: a terminal-native app uninstaller for macOS and Linux. On its first run on my own machine, it freed over 20 GB.
Helix: a multi-node fleet of AI agents across Linux and macOS, with a scheduled loop that finds recurring failures, tests fixes and ships them behind a rollback. See Supposed to Run Itself.
Knowfer: a Rails knowledge base that agents read and write over MCP.
Talkify: a Rails and Vue 3 dashboard for running agents.
waltspence.com: this site and its publishing desk, on Rails, Vue 3, Redis, and Python and Node workers.

Founder and CEO

EnLab, LLC · 2010 to 2016

Founded a startup focused on a WebRTC meeting project.

Skills

Software: Ruby on Rails, Python, JavaScript and Vue, Shell, PostgreSQL, Redis, Docker, Linux and macOS administration, LLM integration and agent systems
Technical: neurostimulator titration workflow, electrode application and troubleshooting, diagnostic equipment calibration and maintenance
Clinical: polysomnography of every study type (adult, pediatric, high-acuity), hypoglossal nerve stimulation (HGNS) titration and follow-up with Inspire, MSLT, PAP therapy and compliance education, AASM scoring

Clinical experience

Registered Polysomnographic Technologist, Daytime

Bon Secours Mercy Health, Richmond, VA · July 2025 to present

Leads the hypoglossal nerve stimulation (HGNS) program at St. Mary’s Hospital.
Daytime testing operations and physician workflow, including study readiness and documentation.

Overnight Registered Polysomnographic Technologist

Virginia Commonwealth University Health, Richmond, VA · 2024 to 2025

Returned to pediatric sleep medicine, which I had worked in early in my career.
Trained and mentored new technologists in electrode application, study protocol, scoring criteria and EMR use.

Daytime Registered Polysomnographic Technologist

Pulmonary Associates of Richmond, Richmond, VA · 2024

Scoring and interpretation workflow, including DME setup.

Overnight Registered Polysomnographic Technologist

Community Health Systems / Bon Secours Mercy Health, Richmond, VA · 2020 to July 2025 (PRN from 2024)

Technical operations of the sleep lab, including equipment readiness and data quality.

Overnight Polysomnographic Technician

Sleep Clinics of America, Richmond, VA · 2017 to 2020

Diagnostic accuracy and patient comfort across high-volume overnight studies.

Earlier sleep laboratory roles

Sleep 360, Austin, TX · 2016
Virginia Medical Group, Colonial Heights, VA · 2014 to 2016
Bon Secours Health Source, Richmond, VA · 2010 to 2014
River City Sleep Medicine (Neurological Associates), Richmond, VA · 2008 to 2010
Sleep Disorders Center of VA, Colonial Heights, VA · 2003 to 2008

Certifications

RPSGT, Registered Polysomnographic Technologist (Board of Registered Polysomnographic Technologists)
BLS, Basic Life Support
Licensed in Virginia and North Carolina

Education

Coursework, Richard Bland College of William & Mary, Petersburg, VA
High school diploma, Dinwiddie County High School, Dinwiddie, VA