Posted Aug 29, 2026

Senior Information System Security Engineer (ISSE) (TS/SCI Clearance And Current Polygraph Required)

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Required Skills • Must have at least 12 years of experience working as an ISSE on a large technical program. • Must have a solid understanding of security practices and policies and hands-on vulnerability testing experience. • Must have experience applying Risk Management Framework. • Must have experience formulating and assessing IT security policy. • Must have demonstrated knowledge of and experience with common security tools, such as Nessus, NMAP, and Wireshark hardware/software security implementation, communication protocol, encryption techniques/tools, and web services. • Must have experience with secure configurations of commonly used desktop and server operating systems. • Must be comfortable working on multiple systems and components simultaneously in various configurations. • Must have strong verbal and written communication skills. • Must be committed to adopting and adhering to best practices. • Must be able to effectively plan and prioritize tasking and communicate clearly regarding technical options and trade-offs. • Must be capable of performing high-quality work both independently and with a team in a fast-moving environment. • IASAE Level 2 or 3 required. • Active TS/SCI security clearance with a current polygraph is required Apply To This Job