JD ID
Position Name
Graph Engineer
About the profile
We are seeking a hands-on Graph Engineer (primarily using Stardog) to design, build, and operate knowledge graph solutions that turn complex, siloed data into a connected, queryable asset for our life science clients. In this role, you will work closely with the Knowledge Management team and client stakeholders to translate data models and business questions into robust, production-grade graph infrastructure.
Acting as a technical specialist internally and externally, you will build and maintain Stardog-based knowledge graphs, integrate diverse data sources through modern data engineering pipelines, and ensure the ontologies and data models underpinning our graphs are sound, scalable, and maintainable.
You bring strong hands-on experience with Stardog and data engineering, a solid understanding of ontology management concepts (RDF/OWL), and a pragmatic engineering mindset. Experience with Databricks, or in life science IT and regulated environments, is a plus and will be considered a strong asset.
Responsibilities
1.



Knowledge Graph Engineering with Stardog
Design, build, deploy, and operate knowledge graphs on Stardog, including data modeling, virtual graphs, and reasoning configuration
Create and maintain Stardog virtual graphs, connecting relational and external data sources to the knowledge graph without physical replication
Design, write, and maintain SMS (Stardog Mapping Syntax) mappings to translate source schemas into RDF, ensuring accuracy, performance, and maintainability
Write and optimize SPARQL queries and Stardog-specific tooling (Stardog Studio, CLI, APIs) for data loading, validation, and troubleshooting
Configure and maintain Stardog security, performance, and scalability settings for production workloads
Monitor, tune, and troubleshoot graph database performance across ingestion, reasoning, and query layers
2. Data Engineering & Integration
Design and implement data pipelines to ingest, transform

📌 Graph Engineer (Barcelona)
🏢 MIGx
📍 Barcelona