Senior Ontologist - Knowledge Graph & Identity
Core
Design, develop, and govern production-scale ontologies and knowledge graphs to model consumer attention data, transforming raw TV and web events into durable graph attributes and supporting AI solutions.
Role type
Senior IC Ontology Engineer (Knowledge Graph)
Builds
Production knowledge graph pipelines, entity resolution systems, and semantic modeling frameworks for media intelligence.
Domain
Media intelligence, data engineering, semantic web.
Deliverable
production ML models
Required skills
Ontology engineering, RDF/RDFS/OWL, SPARQL, SHACL, Python, Entity resolution, Description logics, Data pipeline design, Technical communication
Preferred skills
Amazon Neptune, Stardog, Vector databases, GNN-based reasoning, PySpark, Databricks, Media/Ad tech domain knowledge
Technologies
RDF, RDFS, OWL, SPARQL, SHACL, Python, Databricks, Spark, Amazon Neptune, Stardog, Milvus, Pinecone, Weaviate, LangChain, LlamaIndex
Responsibilities
Design and version core ontologies in RDF/RDFS/OWL; Author SHACL shapes for graph validation; Define derived-attribute schemas; Lead ontology design reviews; Build production knowledge graph pipelines; Implement entity resolution and record linkage workflows; Mentor Ontology Engineers and junior data scientists.
Seniority
Senior, hands-on IC
