Senior Ontology Engineer

Andersen is seeking a Senior Ontology Engineer to join a project focused on building a large-scale Knowledge Graph and delivering AI-powered data and identity solutions. You will play a key role in modeling complex relationships between audiences, content, and behavioral data to drive advanced analytics.

Key responsibilities

• Design, develop, and version core RDF/RDFS/OWL ontologies and SHACL validation frameworks.
• Define ontology standards, aggregation logic, and governance practices aligned with W3C standards.
• Lead ontology design reviews and translate business requirements into scalable semantic data models.
• Build production-grade knowledge graph pipelines using Python and SPARQL, including entity resolution and data enrichment.
• Collaborate with Data Engineering and Data Science teams to integrate graph solutions into production environments.

Requirements

• 5+ years of experience in ontology engineering, semantic data modeling, or knowledge graph development.
• Deep expertise in W3C semantic web standards: RDF, RDFS, OWL, SPARQL 1.1, and SHACL.
• Hands-on experience building and validating graph schemas in production triplestores like Amazon Neptune, Stardog, or GraphDB.
• Strong proficiency in Python for building data pipelines and graph processing workflows.
• Solid understanding of description logics, ontology design patterns, and entity resolution at scale.

What we offer

• Opportunities for professional, financial, and career growth with structured mentoring.
• Access to a comprehensive corporate training portal and certification compensation.
• Participation in a referral program and potential for performance-based bonuses.
• Collaboration with global industry leaders across diverse business domains.