Shaun Marshall // CVField manual · edition 2026-10-12.2

Shaun "Oden" Marshall Curriculum vitae

Shaun Marshall

Edition 2026-10-12.2 · updated 2026-10-12

Enterprise systems, security and AI governance

Current
Senior Systems Analyst, Executive Support, Walt Disney World · Oct 2013 – Present
Employment
Atos assignment: October 2013–November 2022; Disney employee: November 2022–Present.
Certifications
CompTIA Network+, CompTIA i-Net+, Certified Internet Webmaster (CIW); CompTIA Security+ ce (previously held, valid 2022–2025) · all credentials
Education
ECPI University: Computer and Information Science coursework, cybersecurity track (governance and policy focus), 2023–2025
Clearance
Top Secret (Single Scope Background Investigation), previously held

// Summary

People first. Good systems augment good people. I bring 30 years of IT experience to dependable technology for small businesses, executives, and complex organizations. My work spans enterprise support, cybersecurity, knowledge and records migrations, and developmental AI governance through GKOS and GKOS-Engine. I am also conducting independent research into a specific aspect of gravitational physics.

02 Project files

Projects

Each file states its status, what exists now, the results and the limits, and whether a public artifact backs it.

02.1 · Developmental specification

GKOS: AI governance specification and assurance engineering

Founder and initial editor

Independent project. Not affiliated with a standards body or an employer.

Status Public developmental specification; executable mechanism-level checks available. Complete profile qualification and independent interoperability validation remain outstanding.

Evidence Public artifact

Full project file
Problem
When an AI system recommends or takes an action, ordinary logs show that a call happened. They rarely show which evidence it used, what context it saw, who had authority to approve it, or how the result can be challenged and replayed.
My part
I drafted the specification (with AI drafting assistance) and lead its design: provenance, deterministic validation, reproducible context, bounded delegation and records of decisions and actions. I direct the schemas, fixtures and conformance runner and approve each published edition.
Exists now
Published edition v0.82.1 (25 September 2026) with 62 permanent requirements and 28 gate codes, JSON schemas, a requirements registry, and an adapter-neutral conformance runner. CI runs the runner on Linux and Windows with Node 22 and 24.
Results
Mechanism-level checks pass, including a clean-process context replay and a mutation corpus that covers all 28 gate codes. The executable suite covers only part of the profile catalogue, so no conformance profile is qualified yet.
Limits
No qualified profile, no public second implementation, and no independent interoperability validation. Proposed NIST, ISO and EU AI Act mappings are informative drafts under review, not established alignment.
Why it matters
Gives governance teams inspectable contracts for evidence provenance, policy enforcement, delegated authority, refusals and audit reconstruction of agent actions.

02.2 · Open-source releases

GKOS-Engine and Kosmos-Oden: governed knowledge tooling

Product owner and lead developer (agent-assisted implementation)

Independent open-source projects (Apache-2.0).

Status GKOS-Engine release 2.1.1 (18 August 2026); 2.2.0 on main pending release qualification. Kosmos-Oden release 0.8.2 (9 September 2026).

Evidence Public artifact

Full project file
Problem
Agents and people need to search and reason over a Markdown knowledge base without a tool silently changing source files or exposing restricted notes.
My part
I set the requirements and design, review the changes, run the qualification checks and decide releases. AI coding agents write much of the code under that review.
Exists now
A TypeScript library and CLI that parses and validates GKX records, builds canonical graphs, indexes and retrieves notes, and serves ten credential-bound, read-only MCP tools on a local port. Kosmos-Oden uses it to draw a vault as an explorable 3D map in Obsidian or a standalone viewer.
Results
Release-status records show CI and Linux and Windows runtime qualification passing for the recorded main baseline. Writes to source notes remain unavailable unless a host explicitly configures and authorizes them.
Limits
No published usage or adoption figures. The npm package lags the current source (2.0.1). Implementation independence from GKOS has not been demonstrated.

02.3 · Completed internal migration

Team knowledge base migration: OneNote to Markdown to Confluence

Did the export, migration and analysis

Work for Walt Disney World Enterprise Technology.

Status Export complete and shared with the team; Confluence import approximately 95% successful; limitations documented.

Evidence Self-reported

Internal work. No public artifact.

Full project file
Problem
A team's knowledge lived in a OneNote environment that was hard to search, move or preserve with its attachments and history.
My part
I exported the full environment to Markdown with attachments intact, shared the export and approach, ran the Confluence import from a copy, and wrote up the limitations.
Exists now
A complete Markdown export, a Confluence space built from it, and an experimental map of which notes supersede others.
Results
About 95% of the import succeeded (my estimate; the denominator is not published). The supersession map is non-deterministic and is used only to help people review search results.
Limits
Internal work: no public artifact. The import rate is self-reported.