Shape semantic models and knowledge graphs as an Ontology Knowledge Graph Specialist in Toronto, working from the Virtusa office.
This 6–12 month contract supports business and technical partners through ontology development, semantic modeling, and data integration. You will capture business concepts, define relationships, and standardize meaning across datasets and systems. The work requires collaboration with subject matter experts and platform teams.
Key Responsibilities: Partner with business experts to capture concepts and definitions
Design and evolve ontologies, taxonomies, and semantic models
Build knowledge graphs across datasets and systems
Develop RDF-based representations using semantic web standards
Document reusable semantic artifacts and best practices
Requirements: At least six years in semantic modeling or ontology development
Bachelor’s degree or equivalent practical experience
Knowledge of RDF, RDFS, OWL, and complex relationships
Experience with knowledge graph platforms such as Neo4j
Solid communication with technical and non-technical partners
Apply semantic modeling, RDF, and knowledge graph expertise while supporting Virtusa’s Toronto-based data initiatives.