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November 4, 2026
Database Engineer - Knowledge Graph Platform
Senior • On-site
Kraków, Poland
Quick Facts
Role: Database Engineer for a Knowledge Graph platform
Description
Build and evolve an enterprise Knowledge Graph platform supporting AI and Generative AI initiatives. The role focuses on graph database solutions, semantic data modeling (LPG/RDF), data ingestion pipelines (batch and streaming), and integration with LLM, RAG, and GraphRAG. You will also ensure data quality, lineage, metadata governance, and optimize performance, scalability, and cloud operating costs.
Responsibilities
Design, develop, and maintain a Knowledge Graph platform in production
Create and evolve data models using LPG and RDF paradigms
Design and develop ontologies, schemas, and data modeling standards
Build and maintain ingestion processes and batch/streaming pipelines
Ensure data quality, lineage, and metadata management standards
Implement and develop LLM-, RAG-, and GraphRAG-based solutions
Optimize query performance, scalability, and platform maintenance costs
Collaborate with Data, AI, Architecture, and Cybersecurity teams
Develop and maintain services running on Google Cloud Platform
Co-create engineering standards for reliability and observability
Requirements
Minimum 3 years of experience in Data Engineering, Database Engineering, or Platform Engineering
Practical experience with graph databases and production deployments
Knowledge of LPG technologies such as Neo4j, JanusGraph, FalkorDB (or similar)
Knowledge of RDF and standards including SPARQL, RDF, RDFS, OWL, SHACL
Experience with semantic data modeling and ontology design
Practical knowledge of Google Cloud Platform, including GKE, Cloud Run, Pub/Sub, Dataflow, BigQuery, and Cloud Storage
Experience integrating LLM solutions with embeddings, vector search, RAG, or GraphRAG
Proficiency in Python or Java/Scala
Experience building APIs, deployment automation, and CI/CD
Ability to work in complex enterprise environments with multiple stakeholders
Very good English proficiency
Benefits
Opportunity to build an enterprise-scale modern platform
Hybrid work model
Private medical care (LuxMed)
Multisport card
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