Immediate need for a talented
Ontology - Knowledge Graph Specialist . This is a
06+ Months Contract opportunity with long-term potential and is located in
Southlake, Texas (Remote). Please review the job description below and contact me ASAP if you are interested.
Job ID:26-31159Pay Range: $70 - $80/hour. Employee benefits include, but are not limited to, health insurance (medical, dental, vision), 401(k) plan, and paid sick leave (depending on work location).Key Responsibilities:- Design and evolve enterprise ontologies using RDF, RDFS, OWL, Turtle (TTL), and SHACL.
- Develop class/property hierarchies, relationships, taxonomies, namespaces, constraints, and reusable ontology patterns.
- Apply both schema-first and schema-late modeling approaches, including reverse-engineering models from existing data.
- Profile and model large, complex datasets from Excel/CSV, CIQ, configuration, inventory/CMDB, JSON, and relational sources.
- Define atomic vs. derived attributes, cross-field relationships, deterministic derivation rules, and validation rules.
- Develop SPARQL 1.1 queries, competency questions, graph traversals, dependency/impact queries, and semantic validation.
- Build and maintain ontology ingestion, transformation, validation, and testing pipelines using Python.
- Work with RDF graph databases such as GraphDB/Stardog and understand Labeled Property Graph (LPG) technologies such as Neo4j.
- Support Ontology-RAG / GraphRAG / hybrid graph + vector retrieval and integration of knowledge graphs with AI agents.
- Partner with network/domain SMEs to translate implicit business and engineering knowledge into explicit, testable models.
- Maintain ontology artifacts, specifications, mappings, and validation rules in Git/CI-CD.
Key Requirements and Technology Experience:- Strong hands-on experience with RDF, RDFS, OWL, TTL, SHACL, SPARQL, and Semantic Web technologies.
- Practical knowledge of knowledge graphs, graph traversal, RDF stores, LPGs, and graph validation.
- Experience with schema-first and schema-late ontology development.
- Strong data modeling and reverse-engineering skills, including working with messy or incomplete source data.
- Experience with JSON Schema, relational data modeling, and mapping between relational/JSON and graph model
Our client is a leading
IT Industry, and we are currently interviewing to fill this and other similar contract positions. If you are interested in this position, please apply online for immediate consideration.
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