100% remote role Required Skills (Non-Negotiable) Hands-on experience in ontology development, not just graph querying. Strong knowledge of: o OWL, RDF, RDFS, SKOS o SPARQL, SHACL (preferred) Experience designing conceptual and logical domain models. Demonstrated ability to build a knowledge graph from scratch, not just use one. Ability to map enterprise source schemas to semantic models. Experience with at least one semantic technology stack: o Stardog, GraphDB, Neo4j (with RDF frameworks)