Senior Stardog Knowledge Graph Engineer – Healthcare Analytics

Vizient, Inc.; Irving (TX); On-site; USD 102,000 - 179,000; Full time

Job summary

Vizient, Inc. is seeking a skilled Graph Database Engineer to manage Stardog environments supporting healthcare analytics and interoperability.

You will optimize SPARQL queries, design semantic models, and collaborate with architects and governance teams to maintain ontologies. The role involves deploying in Linux environments, integrating with SQL Server, PostgreSQL, and Databricks, and using Kubernetes/Docker on Azure.

Qualifications

• Expertise with knowledge graphs and semantic data models in healthcare.
• Experience administering Stardog or similar graph databases.
• Ability to optimize SPARQL queries and graph workloads.

Responsibilities

• Install, configure, monitor, upgrade, and maintain Stardog environments across development, test, and production.
• Ensure platform availability, scalability, security, reliability, and performance.
• Administer enterprise knowledge graph solutions for healthcare analytics, interoperability, benchmarking, and AI initiatives.
• Develop and optimize SPARQL queries, semantic reasoning, indexing strategies, and large-scale graph workloads.
• Implement and maintain backup, recovery, DR, and BC processes.
• Manage RDF, OWL, RDFS, SHACL and semantic data models for healthcare concepts and relationships.
• Collaborate with enterprise architects and data governance for ontologies and semantic models.
• Support data virtualization, graph integrations, and semantic interoperability initiatives.
• Partner with Data/Platform Engineering to support enterprise data platforms.
• Integrate Stardog with SQL Server, PostgreSQL, Databricks, cloud storage, APIs, and data integration tech.
• Develop automation scripts and procedures for deployment, monitoring, maintenance, and platform administration.
• Support cloud-native deployments using Kubernetes, Docker, Azure Container Apps, AKS, and related Azure services.
• Monitor platform health, performance, capacity, and operational metrics.
• Perform performance tuning and capacity management for graph databases.
• Support CI/CD and Infrastructure-as-Code practices where appropriate.
• Administer and support platform operations in Linux-based environments via CLI.

Skills

Stardog

Knowledge graph

SPARQL

Semantic reasoning

RDF/OWL/SHACL

Kubernetes

Docker

Azure

Performance tuning

Tools

SQL Server

PostgreSQL

Databricks

AKS (Azure Kubernetes Service)

Job description

Vizient, Inc. is seeking a skilled Graph Database Engineer to manage Stardog environments supporting healthcare analytics and interoperability.

You will optimize SPARQL queries, design semantic models, and collaborate with architects and governance teams to maintain ontologies. The role involves deploying in Linux environments, integrating with SQL Server, PostgreSQL, and Databricks, and using Kubernetes/Docker on Azure.