> Markdown version of [/jobs/ext/1940987-senior-data-engineer-semantic-layer-ai-knowledge-graphs](https://www.wearedevelopers.com/jobs/ext/1940987-senior-data-engineer-semantic-layer-ai-knowledge-graphs). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Data Engineer, Semantic Layer & Ai Knowledge Graphs - **Company:** act digital - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Amazon Web Services, Graph Database, Web Ontology Language, SQL Databases, Data Layers - **Published:** August 5, 2026 - **Apply:** https://www.buscojobs.com.es/senior-data-engineer-semantic-layer-ai-knowledge-graphs-en-madrid-ID-365531096 ## About the Role Se valorará dominio de RDF/OWL/SKOS, AWS y SQL, con 4-5 años de experiencia. ## Description act digital busca un Data Engineer para diseñar y construir capas de datos semánticas y soluciones de Knowledge Graphs que alimentan IA a escala empresarial.La posición contempla un modelo híbrido en Barcelona, con énfasis en arquitectura de grafos, ingesta de datos, modelado semántico y pipelines de IA.Se valorará dominio de RDF/OWL/SKOS, AWS y SQL, con 4-5 años de experiencia.Proyecto global y entorno de producción.#J-*****-Ljbffr ## Related Videos - [Why Your AI Agent Keeps Hallucinating Your Data: Building Deterministic Context Layers](https://www.wearedevelopers.com/videos/2055-why-your-ai-agent-keeps-hallucinating-your-data-building-deterministic-context-layers) - [Beyond Dashboards: Fixing Text-to-SQL with Semantic RAG](https://www.wearedevelopers.com/videos/2036-beyond-dashboards-fixing-text-to-sql-with-semantic-rag) - [Fault Tolerance and Consistency at Scale: Harnessing the Power of Distributed SQL Databases](https://www.wearedevelopers.com/videos/1146-fault-tolerance-and-consistency-at-scale-harnessing-the-power-of-distributed-sql-databases) - [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library) - [Graphs and RAGs Everywhere... But What Are They? - Andreas Kollegger - Neo4j](https://www.wearedevelopers.com/videos/1311-graphs-and-rags-everywhere-but-what-are-they-andreas-kollegger-neo4j) - [Scaling GraphRAG: Efficient Knowledge Retrieval for AI](https://www.wearedevelopers.com/videos/100025-scaling-graphrag-efficient-knowledge-retrieval-for-ai) ## Related Articles - [Graph and AI Trends 2026: Why Is AI Running but Not Yet Delivering?](https://www.wearedevelopers.com/magazine/680-graph-and-ai-trends-2026-why-is-ai-running-but-not-yet-delivering) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Top Big Data Technologies That You Need to Know](https://www.wearedevelopers.com/magazine/108-top-big-data-technologies-that-you-need-to-know)