Principal Mechanical Engineer - High-Security Facility Expert

Leidos Inc; Reston (VA); On-site; USD 154,000 - 278,000; Full time

Job summary

Leidos seeks a Principal Mechanical Engineer to support high-priority national security missions in Reston, VA. The role focuses on assessing and characterizing complex facilities in denied-access environments, leveraging 3D modeling, simulations, and cross-disciplinary collaboration to determine mission relevance and vulnerabilities.

The candidate will produce technical assessments, engage with government and contractor teams, and guide engineering analyses under stringent security

Qualifications

• Active TS/SCI clearance.
• Advanced engineering mastery across complex programs.
• MEP systems design, integration, and operation.

Responsibilities

• Reverse engineering and facility characterization in denied-access environments.
• Evaluate vulnerabilities and mission impacts of facility designs.
• Develop high-fidelity 3D models and simulations of operations.
• Analyze supporting facility systems (MEP) for integration and functionality.
• Translate data and assessments into reports, CAD/BIM products, and analyses.

Skills

TS/SCI clearance

Mechanical engineering

3D modeling

Engineering analysis

Technical reporting

Education

Master's degree + 15+ years experience

Doctorate + 13+ years experience

Tools

Autodesk Revit

VENTSIM

ETAP

Job description

Leidos seeks a Principal Mechanical Engineer to support high-priority national security missions in Reston, VA. The role focuses on assessing and characterizing complex facilities in denied-access environments, leveraging 3D modeling, simulations, and cross-disciplinary collaboration to determine mission relevance and vulnerabilities.

The candidate will produce technical assessments, engage with government and contractor teams, and guide engineering analyses under stringent security