Sr Information Systems Security Officer - TS/SCI Poly ...

Senior Information Systems Security Officer (ISSO)Location: Annapolis Junction, MD Clearance Required: TS/SCI with Polygraph Telework: Based on tasking About the Role We're seeking a Senior ISSO to support a newly awarded contract and play a key role in strengthening and maintaining the security posture of missioncritical systems. In this role, you'll support the full lifecycle of information assurance activities-from policy development and risk assessments to documentation, configuration management, and daytoday security operations. If you're a seasoned ISSO who thrives in highimpact environments and enjoys collaborating with technical teams, users, and leadership, this opportunity offers both challenge and purpose. What You'll Work On Supporting the organization's information assurance program across systems, enclaves, and mission environments Helping propose, coordinate, implement, and enforce security policies, standards, and methodologies Maintaining the operational security posture of assigned systems Managing daytoday security operations and supporting system security activities Evaluating security solutions to ensure compliance with classified processing requirements Performing vulnerability and risk assessments to support certification and accreditation Providing configuration management for securityrelated software, hardware, and firmware Assessing the security impact of system changes and managing updates accordingly Preparing and reviewing key documentation, including: System Security Plans (SSPs) Risk Assessment Reports Certification & Accreditation (C&A) packages System Requirements Traceability Matrices (SRTMs) Supporting security authorization activities under NISCAP and DoD RMF What You Bring Bachelor's degree in Computer Science, Information Assurance, Information Security, or related field In lieu of a bachelor's degree, 4 additional years of related experience may be considered 12+ years of related experience, including: 7+ years as an ISSO supporting IC or DoD programs of similar scope and complexity DoD 8570 compliance at IAM Level II or IAT Level III (CASP, CISSP, or Associate) Strong understanding of information assurance principles, system security engineering, and risk management Experience supporting certification, accreditation, and continuous monitoring activities Excellent communication skills and the ability to work effectively with technical teams and leadership Active TS/SCI with Polygraph

Created: 2026-03-04