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# Data Engineer (Knowledge Graphs) | Top Ai Startup

- **Company:** Joppy
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Amazon Web Services, Big Data, Information Engineering, Data Systems, Graph Database, Neo4j, Software Tools, Semantic Web, Data Pipelines
- **Published:** August 6, 2026
- **Apply:** https://www.buscojobs.com.es/data-engineer-knowledge-graphs-top-ai-startup-en-barcelona-ID-366197773

## About the Role

At least 5 years of experience as Data Engineer / Scientist
2+ years of hands-on experience with Knowledge Graphs or Semantic Web technologies
Background in Data Engineering or Data Science (engineering preferred)
Experience with Knowledge Graph technologies (no matter if RDF based or PLGs)
Proficiency with general data engineering tools
Familiarity with AWS Neptune or similar managed graph solutions is a plus
Curious, collaborative, and excited to tackle a specialized, high-impact challenge

## Description

We're looking for a Data Specialist focused on Knowledge Graphs to join our client team.You'll work at the intersection of big data, semantics, and AI, helping architect and scale our graph-based data infrastructure.Your role will focus on designing and maintaining data systems that power our knowledge graph platform - including RDF graphs, ontologies, and semantic validation/querying pipelines.You'll contribute to a deeply technical mission: representing and verifying information in a structured, trustworthy way.What you'll doDesign, build, and maintain scalable graph-based data pipelines (batch and streaming)Model and manage Knowledge Graphs at scaleExplore and work with graph databases such as Neo4j, JanusGraph, or Amazon NeptuneCollaborate closely with the Data and AI teams on data modeling, storage, and transformationPromote a culture of clean, reliable, and meaningful data engineeringWhat we're looking forAt least 5 years of experience as Data Engineer / Scientist2+ years of hands-on experience with Knowledge Graphs or Semantic Web technologiesBackground in Data Engineering or Data Science (engineering preferred)Experience with Knowledge Graph technologies (no matter if RDF based or PLGs)Proficiency with general data engineering toolsFamiliarity with AWS Neptune or similar managed graph solutions is a plusCurious, collaborative, and excited to tackle a specialized, high-impact challengeAbout JoppyJoppy is a technology recruitment platform built for developers by developers.No CV is required.Just say what you know and what you want.You choose who can talk to you.Companies cannot write to you until you accept their offer.Get rewarded if you get hired.Keep an eye on tech job opportunities anonymously and find the job that makes you happy.#J-*****-Ljbffr


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