Data Engineer - Graph/Neo4J Engineer

Valiant Technologies LLC; Dallas (TX); On-site; USD 150,000 - 190,000; Full time

Job summary

Valiant Technologies LLC is seeking a senior data engineer to design graph models and ontologies for complex business data, and to build production graphs on AWS Neptune or Neo4j in Dallas.

You will develop batch and streaming pipelines, write and optimize Cypher, Gremlin, or SPARQL queries, and integrate graphs with LLMs for GraphRAG and semantic search. You will also mentor engineers and help set graph engineering standards.

Qualifications

• Bachelor's degree with 12-15 years of data engineering experience, 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.

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

Data engineering

Python/Java

Graph databases

Education

Bachelor's degree

Tools

AWS Neptune

Neo4j

Spark

Kafka

Airflow

Infrastructure as Code

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.