Lead Ontology & Knowledge Graph Architect

Jobtailor; California (MO); On-site; USD 140,000 - 210,000; Full time

Job summary

Jobtailor seeks an experienced data engineer to lead the design, governance, and implementation of enterprise ontologies, semantic layers, and knowledge graphs.

You will combine semantic modeling with hands-on graph and vector database work (Neo4j, Neptune, AWS) to power AI‑augmented search, while aligning business goals with technical solutions and ensuring robust security and data governance.

Qualifications

• 7+ years of experience in data engineering, data architecture, semantic technologies, knowledge engineering, or related fields with a strong technical implementation background.

Responsibilities

• Lead design, development, and governance of enterprise ontologies, semantic layers, and knowledge graphs.
• Combine deep semantic modeling expertise with hands-on implementation of graph technologies, vector databases, and federated data architectures.
• Design and build enterprise ontologies and semantic models that align business objectives with technical implementation.
• Lead the creation and maintenance of semantic layer graphs, knowledge graphs, and entity graphs.
• Develop and implement strategies for using vector databases and graph databases to enable powerful LLM‑augmented search and reasoning.
• Partner with data engineering, AI, and business teams to translate business goals into ontological models.
• Contribute to the development of a unified data access layer that supports querying across diverse data sources.
• Implement and enforce enterprise security models through the ontology and semantic layer.
• Collaborate on AI integration initiatives, including building ontology‑driven agents.
• Establish ontology governance processes and contribute to the internal Data Marketplace.

Skills

Ontology Modeling

Graph Technologies

Vector Databases

Data Governance

Security Models

Programming: Python

SPARQL

Cypher

Tools

Neo4j

Neptune

PostgreSQL

Snowflake

MongoDB

S3

Kafka

AWS

Job description

Jobtailor seeks an experienced data engineer to lead the design, governance, and implementation of enterprise ontologies, semantic layers, and knowledge graphs.

You will combine semantic modeling with hands-on graph and vector database work (Neo4j, Neptune, AWS) to power AI‑augmented search, while aligning business goals with technical solutions and ensuring robust security and data governance.