Data Engineer - Graph/Neo4J Engineer

Ethereum Technologies LLC; Dallas (TX); On-site; USD 140,000 - 180,000; Full time

Job summary

Ethereum Technologies is seeking a senior Graph Engineer to design graph models and ontologies for complex business data. You will build and run production graphs on AWS Neptune or Neo4j, and develop batch and streaming pipelines to ingest graph data.

You will write and optimize Cypher, Gremlin, or SPARQL queries and integrate graphs with LLMs for GraphRAG and semantic search, while mentoring engineers and setting graph engineering standards.

Qualifications

• Bachelor's degree with extensive data engineering experience (12–15 years).
• Hands‑on expertise with production graphs on AWS Neptune or Neo4j.
• Strong Python or Java and experience with AWS data services.
• Experience with Spark, Kafka or Airflow, plus 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

Python

Java

Cypher

Gremlin

SPARQL

Data modeling

Education

Bachelor's degree

Tools

AWS Neptune

Neo4j

Spark

Kafka

Airflow

Infrastructure as Code

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

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.