What are the responsibilities and job description for the Senior Ontology Engineer position at InterImage?
PixelRain AI is a small, fast-moving AI company delivering an AI-powered product-lifecycle knowledge platform for a U.S. Department of War (DoW) customer: governed ingestion of technical documents, an enterprise ontology and knowledge graph, and generative-AI applications that draft maintenance-planning products and answer engineering questions with citations — running in the customer's cloud environment, with an offline variant for disconnected use. Small team, real users, working software demonstrated every sprint.
Salary: 175,000 - 228,000
What You'll Do
Active US Security Clearance Required
Salary: 175,000 - 228,000
What You'll Do
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
- Active Secret OR Top Secret Clearance Required
- 5 years of hands-on semantic-technology work: OWL, RDF/Turtle, SHACL, and SPARQL
- Experience building ontologies aligned to an upper ontology — BFO and CCO strongly preferred
- 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
Salary : $175,000 - $228,000