Data Ontologist & Knowledge Graph Architect

Programmers.io; Louisville (KY); On-site; USD 120,000 - 180,000; Full time

Job summary

Programm ers.io is seeking a Data Ontologist to design, develop, and maintain enterprise ontologies, taxonomies, and knowledge graphs to support governance, analytics, AI, and knowledge management. You will collaborate with business and technical teams to translate concepts into semantic structures and ensure data quality and interoperability.

The role emphasizes semantic technologies (RDF/OWL/SKOS/SPARQL), data governance, and cross-domain modeling, with opportunities to enable generative AI

Qualifications

• Master's degree in Information Science, Data Science, AI, or related field.
• Experience with enterprise data platforms (Azure, AWS, or Google Cloud).
• Familiarity with healthcare, finance, retail, or insurance data domains.
• Understanding of Generative AI, LLMs, and Retrieval-Augmented Generation (RAG).
• Knowledge of data catalog and governance tools (Collibra, Alation, Informatica, Purview).
• Strong understanding of ontologies, knowledge graphs, data modeling, metadata management, MDM, and governance frameworks.

Responsibilities

• Design, develop, and maintain enterprise ontologies, taxonomies, controlled vocabularies, and knowledge graphs.
• Define entity relationships, metadata standards, and semantic models across domains.
• Translate business concepts into semantic data structures with stakeholders.
• Support data governance with data definitions, standards, and lineage.
• Develop ontology documentation, naming conventions, and glossaries.
• Implement semantic technologies such as RDF, OWL, SKOS, SPARQL, and graph DBs.
• Collaborate with data engineers to integrate ontology models with platforms.
• Improve data discovery, interoperability, and reuse across systems.
• Support AI/ML and Generative AI initiatives through semantic enrichment and knowledge graphs.
• Conduct ontology reviews, impact assessments, and change management.
• Ensure compliance with data governance, privacy, and regulatory requirements.

Skills

Semantic Web Techs

Knowledge Graph Design

SQL

Python

Data Modeling

Metadata Management

Graph Databases

Data Governance

Machine Learning Concepts

Cloud Data Platforms

Education

Master's degree in Information Science/DS/AI or related

Tools

Collibra

Alation

Informatica

Microsoft Purview

Azure

AWS

Google Cloud

Neo4j

Amazon Neptune

Stardog/GraphDB

Job description

Programm ers.io is seeking a Data Ontologist to design, develop, and maintain enterprise ontologies, taxonomies, and knowledge graphs to support governance, analytics, AI, and knowledge management. You will collaborate with business and technical teams to translate concepts into semantic structures and ensure data quality and interoperability.

The role emphasizes semantic technologies (RDF/OWL/SKOS/SPARQL), data governance, and cross-domain modeling, with opportunities to enable generative AI