Senior Knowledge Graph Engineer

This is a fully remote position, open to applicants in Poland.

📋 Description

• Design, develop, and sustain high-speed GraphRAG ingestion pipelines.

• Convert relational ERP and SQL data, unstructured ESG reports, and streaming feeds into operational Labeled Property Graphs and RDF Triple Stores.

• Create automated NER, entity-linking, and deduplication workflows for cohesive canonical graph nodes.

• Establish ETL/ELT pipelines to map and integrate internal supply-chain data with external ontologies and registries.

• Collaborate with AI/ML Engineers on low-latency GraphRAG retrieval layers.

• Craft optimized Cypher and SPARQL queries.

• Develop NL2Query tools, hybrid vector-graph indexing pipelines, and MCP tool endpoints for autonomous LLM agents.

• Operationalize SHACL shapes as automated data-quality tests within CI/CD pipelines.

• Enhance multi-hop query performance, graph partitioning, and database indexing for sub-second traversal across billions of nodes and edges.

⛳️ Requirements

• A degree in Computer Science, Mathematics, Engineering, or a closely related technical field.

• Over 4 years of practical experience in building and querying graph databases.

• Familiarity with Labeled Property Graphs (Neo4j, Memgraph, TigerGraph) or RDF Triple Stores (GraphDB, Stardog, Virtuoso).

• Strong background in cloud technology, preferably within the Azure ecosystem.

• Advanced skills in Python, including proficiency in RDFLib, NetworkX, and PyGraphistry.

• Experience in building entity extraction pipelines utilizing LangChain, LlamaIndex, spaCy, or LLM-based structured extraction.

• Practical experience with dbt and integrating graph databases with vector stores like Qdrant, Pinecone, or pgvector.

• Knowledge of semantic web standards: RDF, RDFS, OWL, SKOS, SHACL, RDF-star, and SPARQL.

• Understanding of graph schema design principles, including the T-Box vs. A-Box distinction.

• Familiarity with mapping languages, such as RML and R2RML.

• Experience with domain-specific supply chain, carbon accounting (GHG Protocol), or lifecycle assessment (LCA) data structures is advantageous.

• Direct experience in developing Model Context Protocol (MCP) servers is beneficial.

• Experience with enterprise OBDA approaches at scale is a plus.

• Candidates must be eligible to work and reside in Poland.

• CV must be submitted in English.

🏝️ Benefits

• Provision of all necessary office and IT equipment.

• Flexible working hours.

• Wellness allowance for mental and physical well-being.

• Access to professional mental health support.

• Referral bonus policy.

• Opportunities for learning and development.

• Participation in sustainability events and community involvement.

• Peer recognition program.

• Employee-led resource groups.

• Optional (fully covered or co-financed) healthcare and life insurance.

• Multisport card.

• Multikafeteria.

• Lunch card.

• Hybrid work organization.

• Remote work from abroad policy.

• Internet and electricity bill allowance.

• Additional day off for community service when volunteering.