Semantic Engineer / Knowledge Graph Engineer

Employment Type:

Permanent

About the Opportunity

We're building the next generation of intelligent data platforms, combining semantic technologies, knowledge graphs and AI to solve some of the most complex information challenges facing modern enterprises.
As a Senior Semantic Engineer, you'll join a collaborative team of engineers, architects and data specialists designing cutting-edge semantic solutions that power advanced analytics, enterprise search and AI-driven applications. This is an opportunity to work with modern technologies, influence architectural decisions and help shape the future of knowledge-driven systems.
If you're passionate about semantic web technologies, enjoy solving complex modelling challenges and want to work in an environment that values innovation, continuous learning and technical excellence, we'd love to hear from you.
The Role
You'll play a key role in the design, development and evolution of enterprise semantic models and knowledge graph solutions,



working closely with technical and business stakeholders to create scalable, reusable semantic architectures.
You'll help establish best practices around ontology design, semantic interoperability, data quality and governance while contributing to the wider engineering community.

Key Responsibilities
Design and develop semantic models, ontologies and enterprise knowledge graphs.
Build and maintain semantic data models using W3C Semantic Web standards.
Develop and optimise SPARQL queries to support data integration, analytics and business applications.
Design validation rules using SHACL to ensure semantic consistency and data quality.
Develop and maintain OWL ontologies supporting enterprise reasoning and inference.
Build and manage SKOS vocabularies and taxonomy structures.
Collaborate with architects, engineers and domain experts to model complex business concepts.
Contribute to semantic governance, modelling standards and best practices a

📌 Semantic Engineer (Barcelona)
🏢 US3 Consulting
📍 Barcelona