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Senior Knowledge Graph Engineer

Barcelona, CT, es🌐 Remote💼 Full-time🗓 2026-07-28 → 2026-09-26

Core

Operationalize formal domain ontologies into high-throughput, multi-hop systems to power autonomous AI agents solving complex sustainability challenges.

Role type

Senior Knowledge Graph Engineer (Production)

Builds

High-speed GraphRAG ingestion pipelines, entity-resolution workflows, and low-latency retrieval layers for autonomous agents.

Domain

Sustainability / Supply Chain / Knowledge Graphs

Deliverable

production ML models | product features

Required skills

Graph database engineering (Labeled Property Graphs, RDF Triple Stores), Python (RDFLib, NetworkX), NLP frameworks (LangChain, LlamaIndex, spaCy), Semantic Web standards (RDF, OWL, SHACL, SPARQL), Cloud technology (Azure), Data transformation (dbt), Vector store integration

Preferred skills

Supply chain/carbon accounting data structures, Model Context Protocol (MCP) server development, Enterprise OBDA approaches

Technologies

Neo4j, Memgraph, TigerGraph, GraphDB, Stardog, Virtuoso, Azure, Python, LangChain, LlamaIndex, spaCy, dbt, Qdrant, Pinecone, pgvector, RDFLib, NetworkX, PyGraphistry, SHACL, Cypher, SPARQL

Responsibilities

Design and maintain high-speed GraphRAG ingestion pipelines transforming relational and unstructured data into operational graph stores; Build automated NER, entity linking, and deduplication workflows for unified canonical graph nodes; Implement ETL/ELT pipelines to federate internal data with external ontologies and registries; Partner with AI/ML Engineers to build low-latency GraphRAG retrieval layers and NL2Query tools; Operationalize SHACL shapes into automated data quality tests within CI/CD pipelines; Optimize multi-hop query performance, graph partitioning, and database indexing strategies.

Seniority

Senior, hands-on IC

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