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C4A Systems Engineer Subject Matter Expert

Leidos • Suffolk, VA, US • published 2026-10-07 09:03:19.738864

Description

**Description** **C4A Systems Engineer Subject Matter Expert** **Suffolk, VA** **Minimum of Secret clearance required** The Defense Sector at Leidos is currently looking for a **C4A Systems Engineer Subject Matter Expert.** The **C4A Systems Engineer Subject Matter Expert** provides expert\-level leadership, engineering expertise, and operational support across the full spectrum of Command, Control, Communications, Computers, and Assurance (C4A) activities. This position supports Joint, Coalition, and mission\-partner interoperability initiatives through the design, integration, testing, assessment, and sustainment of complex network and system architectures. The successful candidate will lead engineering efforts supporting secure operational environments, ranging from DoD classified and unclassified networks to coalition secret\-releasable architectures and RDT\&E environments. This role combines systems engineering, network engineering, cybersecurity, interoperability testing, and project leadership to enable mission success in complex multi\-domain operational environments. **Primary Responsibilities:** * C4A Engineering — Planning, preparation, research, coordination, and execu...

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