We are seeking a highly skilled on Ontology Expert & Knowledge Graph with expertise in ontology development and knowledge graph implementation. This role will be pivotal in shaping our data infrastructure and ensuring accurate representation and integration of complex data sets. You will leverage industry best practices to design, develop, and maintain ontologies, semantic and syntactic data models, and knowledge graphs that drive data-driven decision-making and innovation within the company.

Job Purpose:

The role of Ontology & Knowledge Graph / Data Engineer is to design, develop, implement, and maintain enterprise ontologies in support of Organizations Data Driven Digitalization strategy.

This role combines architecture ownership with hands-on engineering: you will model ontologies, stand up graph infrastructure, build semantic pipelines, and expose graph services that power search, recommendations, analytics, and GenAI solutions for our organization.





Seeking highly skilled motivated expertise to drive the development and shape the future of enterprise AI by designing and implementing large-scale ontologies and knowledge graph solutions. You’ll work closely with internal engineering and AI teams to build scalable data models that enable advanced reasoning, semantic search, and agentic AI workflows.

Key Responsibilities:

RDF/OWL Ontology Engineering
Design and maintain enterprise ontologies using RDF, RDFS, OWL 2, SKOS, SHACL following formal ontology design patterns.
Capture and formalize domain knowledge into logically consistent ontological structures, reusing global standards whenever possible (e.g., schema.org, SNOMED, FHIR RDF if healthcare, ISO/IEC vocabularies).
Define modelling guidelines:
identity management (IRIs, URI base strategies)
class/property axioms
equivalence & alignment rules
disjointness, domain/range semantics
open world and monotonic reasoning principles
Implement ontology governance, versioning, namespace strategies, modularization pa

📌 Senior Engineer – Ontology (Bengaluru)
🏢 Siemens Healthineers
📍 Bengaluru