Knowledge Graph Architect for AI & Ontology Leadership

NTT DATA; Greater London; On-site; GBP 110,000 - 170,000; Full time

Job summary

NTT DATA seeks a Knowledge Graph Architect in London to lead the design and governance of enterprise knowledge graphs. You will define ontology, data models, and the boundaries between canonical and interpretive data to enable scalable graph data for AI‑driven use cases, including Graph RAG.

You will provide hands‑on technical guidance, mentor the team, drive delivery, and collaborate with data, AI/ML and business units to translate requirements into semantic models for scalable, high‑quality

Qualifications

• 10+ years in data/graph related roles or similar.

Responsibilities

• Architect and design graph schemas and ontologies for enterprise knowledge graphs.
• Govern canonical vs. interpretive data boundaries and schema evolution.
• Lead graph governance, change control, and versioning processes.
• Provide hands-on technical guidance and mentor internal talent.

Skills

Graph design

Ontology engineering

LLM integration

API design

Team leadership

Education

Bachelor's degree

Tools

Neo4j

Protégé

Neptune

TigerGraph

SPARQL

SHACL

GraphQL

REST

Job description

NTT DATA seeks a Knowledge Graph Architect in London to lead the design and governance of enterprise knowledge graphs. You will define ontology, data models, and the boundaries between canonical and interpretive data to enable scalable graph data for AI‑driven use cases, including Graph RAG.

You will provide hands‑on technical guidance, mentor the team, drive delivery, and collaborate with data, AI/ML and business units to translate requirements into semantic models for scalable, high‑quality