Senior Data Engineer: Knowledge Graphs & AI Pipelines

HireHi; United States; Remote; USD 83,000 - 165,000; Part time

Job summary

Vertex Agility is seeking a Senior Data Engineer to join our data platform team. You will build and maintain pipelines that connect ontology and knowledge-graph data with downstream product and AI modules, while designing robust data models and schemas for shared entities and taxonomies.

You will ensure data quality, schema evolution, and contract compliance across downstream systems, collaborating with Ontology, Data Science, AI, and Product Engineering teams to support AI/ML and analytics

Qualifications

• Strong hands-on experience with Data Engineering, SQL, and Python.
• Production experience building ETL/ELT data pipelines, orchestration, and monitoring.
• Strong knowledge of data modelling and schema design.
• Experience with AWS or Azure.
• Experience with relational and/or graph data models.
• Experience with data quality, validation, schema evolution, and data contracts.
• Knowledge Graph, Ontology, or Knowledge Representation experience is a plus.
• Neo4j, Neptune, Cosmos DB, RDF, OWL, SPARQL, or Gremlin exposure beneficial.

Responsibilities

• Build and maintain production data pipelines connecting ontology and knowledge-graph data with downstream product and AI modules.
• Design canonical data models, schemas, and data contracts for shared entities, relationships, and taxonomies.
• Transform semantic and graph data into structured datasets for product engineers, AI engineers, and data scientists.
• Manage schema versioning and propagate ontology/taxonomy changes across downstream systems.
• Develop data-quality and validation frameworks covering completeness, consistency, and semantic integrity.
• Develop integration and regression testing for data and schema changes.
• Support data pipelines for AI/ML, analytics, agentic, and retrieval-based workflows.
• Work closely with Ontology, Data Science, AI, and Product Engineering teams.

Skills

Data Engineering

SQL

Python

ETL/ELT

Orchestration

Data Modeling

Schema Design

AWS

Azure

Knowledge Graph

Ontology

RDF/OWL/SPARQL

AI/ML

LLM

Job description

Vertex Agility is seeking a Senior Data Engineer to join our data platform team. You will build and maintain pipelines that connect ontology and knowledge-graph data with downstream product and AI modules, while designing robust data models and schemas for shared entities and taxonomies.

You will ensure data quality, schema evolution, and contract compliance across downstream systems, collaborating with Ontology, Data Science, AI, and Product Engineering teams to support AI/ML and analytics