Senior Database Engineer — Knowledge Graph & AI Ops

Medium; Herndon (VA); On-site; USD 150,000 - 190,000; Full time

Job summary

Platinum Technologies in Northern Virginia seeks a Senior Database Engineer to design, implement, and maintain advanced database platforms supporting Object-Based Intelligence mission requirements, enterprise ontologies, and knowledge graph platforms.

The role involves serving as the technical authority for relational, graph, and semantic databases, enabling ontology-driven data integration and scalable analytics while ensuring security, availability, and data integrity across enterprise systems.

Qualifications

• Must be a U.S. citizen with an active TS/SCI clearance with CI polygraph.
• 12 years' experience and an advanced degree, or 17 years with a bachelor's degree.
• Experience designing, implementing, and administering enterprise database solutions for mission-critical applications.
• Experience with relational and graph databases and knowledge graphs.
• Ability to communicate complex technical concepts to technical and non-technical stakeholders.

Responsibilities

• Design, implement, administer, and optimize relational, graph, and semantic database environments for mission requirements.
• Develop data models supporting ontologies, taxonomies, knowledge graphs, and metadata management.
• Design scalable architectures for Semantic Web technologies, RDF stores, graph databases, and SPARQL endpoints.
• Develop and maintain ETL/ELT processes integrating data from multiple sources.
• Collaborate with engineers, data scientists, and Govt stakeholders to translate mission needs into data solutions.
• Optimize performance via indexing, partitioning, replication, and capacity planning.
• Implement security controls, encryption, backup/recovery, and auditing per cybersecurity requirements.
• Develop automation, monitoring, and maintenance for high availability.
• Support AI/ML by providing scalable data infrastructure and access to semantic data stores.
• Produce technical documentation, data dictionaries, and operational procedures.
• Provide mentorship and knowledge transfer to Government personnel and project teams.

Skills

U.S. citizenship

TS/SCI clearance

Database design

Data modeling

Stakeholder communication

Education

Advanced degree / 17 years experience with BA

Tools

PostgreSQL

Oracle

Microsoft SQL Server

Neo4j

GraphDB

Stardog

Amazon Neptune

Job description

Platinum Technologies in Northern Virginia seeks a Senior Database Engineer to design, implement, and maintain advanced database platforms supporting Object-Based Intelligence mission requirements, enterprise ontologies, and knowledge graph platforms.

The role involves serving as the technical authority for relational, graph, and semantic databases, enabling ontology-driven data integration and scalable analytics while ensuring security, availability, and data integrity across enterprise systems.