Data Engineer - Graph/Neo4J Engineer

Quantum Technologies. LLC; Dallas (TX); On-site; USD 180,000 - 240,000; Full time

Job summary

Quantum Technologies. LLC is seeking a senior data engineer focused on graph data modeling and scalable graph platforms. You will design ontologies, implement production graphs on AWS Neptune or Neo4j, and build batch and streaming pipelines to ingest graph data.

You will write optimized queries (Cypher, Gremlin, SPARQL) and explore integrating graphs with LLMs for GraphRAG and semantic search, while mentoring engineers and setting engineering standards for graph initiatives.

Qualifications

• Bachelor's degree; 12–15 years of experience in data engineering.
• Hands-on experience with production graphs on AWS Neptune or Neo4j.
• Strong Python or Java with AWS data services.
• Experience with Spark, Kafka, or Airflow; infrastructure as code.

Responsibilities

• Design graph models and ontologies for complex business data.
• Build and run production graphs on AWS Neptune or Neo4j.
• Develop batch and streaming pipelines to ingest graph data.
• Write and optimize Cypher, Gremlin, or SPARQL queries.
• Integrate graphs with LLMs for GraphRAG and semantic search.
• Mentor engineers and set graph engineering standards.

Skills

Graph data modeling

Mentoring

Semantic/ontology design

Production-grade pipelines

Education

Bachelor's degree

Tools

AWS Neptune

Neo4j

Python

Java

Spark

Kafka

Airflow

Job description

Job Description

• Design graph models and ontologies for complex business data.
• Build and run production graphs on AWS Neptune or Neo4j.
• Develop batch and streaming pipelines to ingest graph data.
• Write and optimize Cypher, Gremlin, or SPARQL queries.
• Integrate graphs with LLMs for GraphRAG and semantic search.
• Mentor engineers and set graph engineering standards.

Required Qualifications

• Bachelor's degree with 12-15 years of experience in data engineering, including 3+ years with production graphs
• Hands-on expertise with AWS Neptune or Neo4j.
• Strong Python or Java, and experience with AWS data services.
• Experience with Spark, Kafka, or Airflow, plus infrastructure as code.

Nice to have

• RDF/OWL, graph algorithms, LangChain, or vector databases.
• AWS or Neo4j certifications.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.