We are looking for an Ontology / Knowledge Graph Engineer to design and govern enterprise semantic models and knowledge graph infrastructure. You will define ontologies, enforce data shapes using SHACL, and integrate graph data into analytics and AI-driven products - working alongside data, product, and ML teams.

Key Responsibilities

• Design and maintain domain ontologies and semantic models using OWL, RDF, and RDFS standards.
• Enforce data integrity and validation rules using SHACL (Shapes Constraint Language) across graph datasets.
• Build, query, and optimise knowledge graphs in graph databases (Neo4j, Amazon Neptune, GraphDB, or Stardog).
• Develop SPARQL queries, graph APIs, and pipelines to expose semantic data to downstream consumers.
• Collaborate with domain experts to capture business knowledge into formal ontology structures.
• Integrate knowledge graphs with ML models, search engin...