Ryan Hohimer
Knowledge Engineer at The Cyber Terrain Organization
West Richland, Washington, United States
Summary
👤
Senior🎓
Top SchoolRyan Hohimer is a Knowledge Engineer and semantic technology specialist with nearly three decades of experience applying knowledge representation and reasoning to national security and cybersecurity problems. He led R&D at PNNL before founding and serving as CTO of DarkLight, where he architected a neocortex-inspired, case-based reasoning platform that powers formal-logic inference over semantic graphs for cyber-behavior analytics. More recently he contributed ontology and semantic design expertise at Semantic Arts and now continues to advance knowledge-driven AI at The Cyber Terrain Organization. Ryan’s work blends object-oriented modeling with Semantic Web Technologies to make computers reason more like human experts—addressing critical shortages of human analysts in cyber defense. An electrical engineering graduate from Washington State University, he pairs deep research roots with product-focused leadership and a long track record of turning metadata insight into operational AI systems.
9 years of coding experience
26 years of employment as a software developer
BS, EE, BS, EE at Washington State University
Github Skills (13)
tac10
owl10
semantics10
linked-data10
standardization9
oasis9
semantic-web9
json-ld9
actor8
ontology8
rdf6
observables6
incident-response5
Programming languages (3)
Github contributions (5)
oasis-open/tac-ontology
Nov 2021 - Dec 2022
OASIS Threat Actor Context (TAC) TC: Creating an ontology for expressing the rich context around Threat Actors. https://github.com/oasis-open/tac-ontology
Contributions:1 review, 50 commits, 33 PRs in 1 year 1 month
tacthreatactorthreat-actorsoasis
oasis-tcs/tac-ontology
Jun 2020 - Oct 2021
OASIS-TAC-TC: OWL representation of the TAC TCs work products are maintained here. - https://github.com/oasis-tcs/tac-ontology
Contributions:40 commits, 9 PRs, 37 pushes in 1 year 4 months
representationowltactcsrdf
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