Senior Knowledge Graph Platform Engineer — GCP & AI Integration

Quick Facts

• Krakow-based opportunity with a hybrid work model (up to 3 days remote per week)

Description

As a Senior Knowledge Graph Platform Engineer, you will design, build, and operate advanced Knowledge Graph capabilities across the organization, leveraging LPG and RDF ecosystems, cloud platform engineering, and AI-enabled retrieval and reasoning techniques.

Your main responsibilities

• Architect, build, and maintain end-to-end graph platform lifecycle (design, deployment, operational excellence)
• Create and optimize graph data models based on LPG and RDF standards, including ontology and schema governance
• Develop and manage production-grade ingestion pipelines (batch and streaming), ensuring data quality and lineage practices
• Ensure high availability, security, and observability of the platform on GCP, adhering to SRE best practices
• Define engineering standards for performance tuning, query optimization, scalability, and cost control
• Collaborate with cross-functional teams (product, data, architecture, security) to deliver reusable graph platform services
• Implement AI-powered retrieval and reasoning workflows using LLMs, RAG, and GraphRAG for real-world business use cases

Requirements

• 3+ years of experience in database and data platform engineering with a focus on graph database implementation
• Proven expertise working with LPG stack: Cypher/Gremlin, Neo4j, FalkorDB, JanusGraph, or similar platforms
• Hands-on experience with RDF stack: SPARQL, GraphDB, Stardog, Blazegraph, Neptune RDF, or similar
• Deep understanding of graph standards and modeling including RDF, RDFS, OWL, SHACL, and ontology governance
• Practical experience delivering solutions on GCP (GKE, Cloud Run, Dataflow, BigQuery, Cloud Storage, IAM, monitoring)
• Experience integrating LLMs into enterprise systems, with proficiency in embeddings, vector/hybrid retrieval, GraphRAG workflows
• Strong software engineering skills in Python, Java, Scala, or Node.js, including API development, CI/CD, and IaC
• Good command of English — communicative proficiency
• Eligibility to work in Europe: existing legal right to work in the European Union

Benefits

• Hybrid work model (up to 3 days remote per week)