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 gov...