Hiring: Senior Ontology Engineer Company: InterImage Location: Arlington, VA Job Posted Time: 2026-09-10 12:34:39 Target Skills & Keywords : AWS, Apache, Git, LLM, Python, RAG, Scrum, Security Clearance, Top Secret Clearance About the job Experience: •5+ years of hands-on semantic-technology work: OWL, RDF/Turtle, SHACL, and SPARQL Required Skills: •Active US Security Clearance Required •Design, build, and maintain the enterprise ontology (BFO/CCO-aligned) and controlled vocabularies, and map source-system data into them •Build and manage the knowledge graph: RDF triple store (Apache Jena/Fuseki or similar), SHACL validation, SPARQL queries •Build the governed ingestion path so extracted content lands in the graph with provenance and confidence, and connect the graph to retrieval and GenAI applications •Carry normal full-stack development work alongside the ontology work — Python services, web UI, AWS •Work in a small Scrum team; demo working software every sprint Qualifications: •Active Secret OR Top Secret Clearance Required •Production experience with a triple store (Apache Jena/Fuseki, RDF4J, or similar) •Solid general software engineering: Python, APIs, Git — able to handle full-stack tasks (web + AWS), not ontology-only •Working familiarity with LLMs and RAG — you've connected structured knowledge to generative applications Compensation: •$175,000 - $228,000 / year Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!