Lead Knowledge Graph & Ontology Architect (Remote)

Cognizant; Hartford (CT); Remote; USD 130,000 - 160,000; Full time

Job summary

Cognizant Technology Solutions Corporation is seeking a Senior Knowledge Graph & Ontology Architect to design and govern enterprise semantic architectures powering trusted knowledge systems and AI-ready solutions. You will work with data architects, engineers, domain experts, AI specialists, and client stakeholders to establish the semantic foundation for graphs, search, analytics, and agentic AI.

You will lead ontology and semantic model design, contribute to governance frameworks, and

Qualifications

• 8+ years of experience in data/knowledge graph architecture or ontology engineering.
• Hands-on OWL/RDF development, SHACL, and semantic modeling.
• Experience building graph-based systems with Neo4j, Neptune, TigerGraph, GraphDB or similar.
• Proficient in Python and SQL; familiar with GCP BigQuery, Dataplex, Vector Search.
• Ability to collaborate with technical and business stakeholders on data modeling.

Responsibilities

• Design and govern ontologies, semantic models, and knowledge graph architectures.
• Lead business domain models and governed vocabularies across key entities.
• Define enterprise glossaries, KPI registries, governance processes and ownership models.
• Architect graph-based knowledge platforms using Neo4j, Neptune, TigerGraph, GraphDB, Stardog, GraphDB, Spanner Graph, BigQuery, Dataplex, Vector Search.
• Partner with engineering, AI, and platform teams to establish governance controls, security standards, lineage frameworks, and AI architecture guardrails.

Skills

Python

SQL

Data governance

Stakeholder collaboration

Tools

Neo4j

Amazon Neptune

TigerGraph

GraphDB

Stardog

Apache Jena

Spanner Graph

BigQuery

Dataplex

Vector Search

GQL

Job description

Cognizant Technology Solutions Corporation is seeking a Senior Knowledge Graph & Ontology Architect to design and govern enterprise semantic architectures powering trusted knowledge systems and AI-ready solutions. You will work with data architects, engineers, domain experts, AI specialists, and client stakeholders to establish the semantic foundation for graphs, search, analytics, and agentic AI.

You will lead ontology and semantic model design, contribute to governance frameworks, and