Senior Civil Engineer - TS/SCI Poly

**Description**

Leidos is seeking an experienced **Civil Engineer** to support critical national security missions in Reston, Virginia. This role focuses on the assessment, reverse engineering, and characterization of complex above-ground and subterranean facilities located in denied-access environments.

The successful candidate will apply deep engineering expertise to reconstruct facility layouts, operational workflows, and supporting infrastructure associated with chemical, biological, radiological, and nuclear (CBRN) industrial processes. Leveraging a multidisciplinary approach, you will evaluate facility capabilities, identify vulnerabilities, and assess potential threat vectors to support high-priority mission objectives.

This position requires a highly analytical engineer who can develop sound technical assessments in situations where complete information is inherently unavailable. The ideal candidate combines creativity, intellectual curiosity, and e...

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