Senior Data Engineer - Ontology & Knowledge Graphs
Core
Design and build data foundations for ACRA applications and Valarie to understand organizational information by turning heterogeneous sources into coherent entities, relationships, and queryable data products.
Role type
Senior Data Engineer (Ontology & Knowledge Graphs)
Builds
Canonical data models, graph/relational/NoSQL structures, ingestion pipelines, and data interfaces for AI tools.
Domain
Enterprise AI, Security, Government & Regulated Enterprise
Deliverable
production ML models
Required skills
Python, SQL, NoSQL, Graph databases (Neo4j, RDF), Ontology design, Entity resolution, Data modeling
Preferred skills
Property graphs, RDF-based knowledge graphs, DataOps collaboration
Technologies
Neo4j, Cypher, SPARQL, Python, SQL, NoSQL
Responsibilities
Define and evolve ontologies covering organizational entities and business rules; Build ingestion and transformation pipelines from APIs, databases, documents, and events; Implement entity resolution, deduplication, and source reconciliation; Design and maintain graph models, relational schemas, and NoSQL structures; Develop efficient queries and data interfaces for applications and AI tools; Implement automated tests for transformation correctness and semantic constraints.
Seniority
Senior, hands-on IC
