Senior Civil Engineer (TS/SCI) – Underground & Infrastructure

Leidos; Reston (VA); On-site; USD 139,000 - 251,000; Full time

Job summary

Leidos in Reston, Virginia seeks a Principal Civil Engineer to support national security missions. The role focuses on assessment, reverse engineering, and characterization of complex facilities in denied-access environments, reconstructing layouts and supporting infrastructure for CBRN processes.

The successful candidate will lead engineering analyses, collaborate with government and contractor teams, and deliver authoritative technical assessments in fast-paced government facilities.

Qualifications

• Active TS/SCI clearance with the ability to maintain it.
• U.S. Citizenship required.
• Master's degree with 15+ years of relevant experience.
• Experience in facility analysis and infrastructure vulnerability assessments.
• MEP systems knowledge for complex facilities.

Responsibilities

• Reverse engineer complex industrial processes and facility layouts to assess mission relevance.
• Evaluate underground and hardened facilities for structural survivability.
• Create 3D models and simulate facility configurations.
• Identify vulnerabilities and potential threat vectors.
• Prepare technical reports and brief senior stakeholders.
• Lead cross‑disciplinary teams and provide SME guidance.

Skills

TS/SCI clearance

Senior engineering experience

3D modeling & CAD

MEP systems knowledge

Education

Master's degree +15+ years of relevant experience

Doctorate +13+ years of relevant experience

Tools

Autodesk Revit

BIM platforms

Job description

Leidos in Reston, Virginia seeks a Principal Civil Engineer to support national security missions. The role focuses on assessment, reverse engineering, and characterization of complex facilities in denied-access environments, reconstructing layouts and supporting infrastructure for CBRN processes.

The successful candidate will lead engineering analyses, collaborate with government and contractor teams, and deliver authoritative technical assessments in fast-paced government facilities.