Principal Data Engineer: Semantic Modeling & Knowledge Graphs

BWXT; Oak Ridge (TN); On-site; USD 86,000 - 136,000; Full time

Benefits offered by this job

Competitive salary

Flexible schedules

Professional development

Inclusive culture

Mission-driven programs

Continuous learning

Job summary

BWX Technologies, Inc. in Oak Ridge, TN seeks a Principal Data Engineer to design semantic models and enterprise knowledge architectures for real-time industrial data across manufacturing domains.

You will build knowledge graphs aligned with ISA-95 and W3C standards, collaborate with controls engineers and data teams, and enable analytics, predictive maintenance, and AI-driven automation in a high-security setting.

Qualifications

• Bachelor’s degree in Engineering, Physics, Computer Science, or related STEM field.
• Minimum 5 years of experience in data engineering, semantic modeling, ontology design, or knowledge graph development.
• Experience designing ontologies using OWL, RDF, RDFS, SKOS, SHACL, and SPARQL.
• Hands-on experience with pipelines for structured, semi-structured, streaming, and unstructured data.
• Experience integrating OT/IoT, edge devices, and SCADA systems into unified data environments.
• Proficiency in Python, Java, or Scala; familiarity with cloud platforms and Kubernetes.
• Understanding of semantic governance and lifecycle management.
• Must be a U.S. citizen with ability to obtain and maintain a DOE Q clearance.

Responsibilities

• Design semantic data models and ontologies enabling unified interpretation of industrial data across sectors.
• Develop enterprise knowledge graph components using OWL, RDF, RDFS, SKOS, SHACL, and SPARQL.
• Build unified namespaces aligned with ISA-95 and W3C standards for cross-system interoperability.
• Architect scalable storage including time-series databases, knowledge graphs, and lakehouse systems.
• Engineer pipelines to ingest, reconcile, and contextualize diverse data types.
• Apply governance practices including versioning, modularization, and URI strategies.
• Map relational models into semantic representations using R2RML/RML.
• Support AI/ML and simulation teams by embedding semantic models into workflows.
• Lead workshops with SMEs to define domain concepts and requirements.
• Implement data quality controls, lineage, and anomaly detection.
• Develop reusable frameworks for units modeling and event modeling.
• Mentor engineering teams and contribute to data modernization strategies.
• Maintain semantic specs, governance artifacts, and compliance docs.
• Participate in DOE/NNSA audits, reviews, and inspections.

Skills

Semantic modeling

Ontology design

Knowledge graph

Python/Java/Scala

Cloud platforms

Kubernetes

OT/IoT integration

Data architecture

Security clearance

Education

Bachelor’s degree in STEM

Master’s degree (preferred)

Tools

OWL

RDF

RDFS

SKOS

SHACL

SPARQL

Job description

BWX Technologies, Inc. in Oak Ridge, TN seeks a Principal Data Engineer to design semantic models and enterprise knowledge architectures for real-time industrial data across manufacturing domains.

You will build knowledge graphs aligned with ISA-95 and W3C standards, collaborate with controls engineers and data teams, and enable analytics, predictive maintenance, and AI-driven automation in a high-security setting.