Database Engineer - Knowledge Graph Platform

Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, they employ around 150 professionals delivering specialist and executive recruitment, employee outsourcing, HR consulting, employer branding, and market research. Their division-based structure combines deep industry expertise with functional specialisation, providing tailored solutions for companies in every sector.

• Minimum 3 years experience in Data Engineering, Database Engineering, or Platform Engineering.
• Practical experience with graph databases and production-level implementations.
• Knowledge of LPG technologies such as Neo4j, JanusGraph, FalkorDB or similar.
• Familiarity with RDF technology and standards: SPARQL, RDF, RDFS, OWL, and SHACL.
• Experience in semantic data modeling and ontology design.
• Practical knowledge of Google Cloud Platform, especially GKE, Cloud Run, Pub/Sub, Dataflow, BigQuery, and Cloud Storage.
• Experience integrating solutions based on LLM, embeddings, vector search, RAG, or GraphRAG.
• Good programming skills in Python or Java/Scala.
• Experience with API development, deployment automation, and CI/CD.
• Ability to work in complex enterprise environments and collaborate with multiple stakeholders.
• Very good command of English.

• Design, develop, and maintain the Knowledge Graph platform in a production environment.
• Create and develop data models in LPG and RDF paradigms.
• Design and develop ontologies, schemas, and data modeling standards.
• Build and maintain data ingestion processes and batch and streaming pipelines.
• Ensure data quality, lineage, and metadata management standards.
• Implement and develop solutions based on LLM, RAG, and GraphRAG.
• Optimize query performance, scalability, and platform maintenance costs.
• Collaborate with Data, AI, Architecture, and Cybersecurity teams on business initiatives.
• Develop and maintain services operating on Google Cloud Platform.
• Co-create engineering, reliability, and observability standards of the platform.

Only candidates located in Poland are considered due to the job location in Kraków.