Ontology Engineer

Role: Ontology Engineer Location: UK Type: Contract The Context: Thebes Group is an optimisation company specialising in AI-enabled transformation. We help organisations improve workflow, reporting, information management, and operational decision-making by combining process optimisation, knowledge architecture, semantic technologies, automation, and artificial intelligence. We are currently delivering an AI transformation programme for a private equity group, focused on enhancing group-level operations through intelligent workflows, improved information accessibility, executive reporting, and AI-driven operational intelligence. A foundation ontology and taxonomy already exists. The data is mapped, manageable in scope, and well understood within the team. This is not a build-from-scratch engagement. A Knowledge Graph Architect sits alongside this role to make the semantic structures operational, and an AI engineer handles the agent build. The Ontology Engineer owns the meaning layer: what data is, what the relationships between concepts are, and what the rules are that govern how information should be understood across the organisation. The Role: As Ontology Engineer, you are responsible for the semantic foundation of the programme. You will take the existing ontology and taxonomy and expand, refine and govern them as operational requirements evolve and new agent use cases emerge. Your work defines what the organisation''s data means and how concepts relate to each other. ..... full job details .....