CareerPlan

Ontology Architect and Knowledge Modeling Specialist - SME

Chantilly, VAFull-time$110k2026-10-14 → 2026-11-10
No visa sponsorshipCitizens onlySecurity clearance required

Core

Lead the architecture, design, and implementation of enterprise knowledge graphs and ontological models to transform unstructured data into machine-readable intelligence for advanced semantic search and AI capabilities.

Role type

Senior Semantic Architect / Ontology Engineer

Builds

Enterprise knowledge graphs, ontological models, and semantic schemas

Domain

US Federal Government / Defense & National Security / Semantic Web

Deliverable

production ML models

Required skills

Semantic web standards (OWL, RDF, SHACL), Enterprise graph databases (GraphDB, Neo4j), Data governance, Entity resolution, AI pipeline integration, Schema design

Preferred skills

Retrieval-Augmented Generation (RAG), Vector search structures

Responsibilities

Engineer domain-specific ontologies and taxonomies; Design semantic schemas for cross-system interoperability; Collaborate with data scientists and AI architects; Establish data governance and validation workflows; Translate complex business domains into structured semantic models

Seniority

Senior, hands-on IC