We are looking for an Ontology Engineer to join our team and work 100% dedicated to a project for one of our top pharmaceutical clients.
You will play a key role in designing and building the semantic foundations of a large -scale, data -driven platform that supports operational processes, automation, and AI -driven use cases in a highly regulated environment.

The Ontology Engineer will be responsible for defining, implementing, and maintaining ontologies and semantic models that power an Enterprise Knowledge Graph focused on operational domains (services, processes, systems, and data).

This is a foundational role, involving close collaboration with business stakeholders, data platforms, automation teams, and AI initiatives to ensure shared meaning, consistency, and scalability across systems.

Main Responsibilities
Design and develop enterprise ontologies representing operational domains such as services, processes, workflows, tasks, and system interactions
Translate complex business concepts into scalable semantic and ontology -based models




Define and maintain RDF/OWL schemas and semantic standards
Implement and manage ontologies within a Knowledge Graph platform (e.g. Stardog or similar)
Support ingestion and semantic enrichment of structured and unstructured operational data
Collaborate with automation, data, and AI teams to embed semantics into workflows and solutions
Establish and maintain a shared operational vocabulary across teams and systems
Contribute to ontology governance, versioning, documentation, and best practices
Ensure alignment with data governance, privacy, and regulatory requirements typical of pharma environments

Requirements
Proven experience in ontology engineering and knowledge graph design
Strong hands -on knowledge of RDF, OWL, and SPARQL
Experience working with knowledge graph platforms (Stardog or equivalent)
Ability to work closely with both technical and business stakeholders
Experience in regulated environments (pharma, healthcare

📌 Ontology Engineer (San Cugat del Vallés)
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📍 San Cugat del Vallés