Information System Security Representative (ISSR)

About the role Seeking a highly experienced Information System Security Representative (ISSR) to support cybersecurity and information assurance efforts for a federal customer in Washington, DC. The ideal candidate will have a strong background in cybersecurity, extensive experience with security assessment and authorization processes, and hold a current Top Secret clearance with SCI eligibility. This onsite role offers the opportunity to contribute to critical federal cybersecurity initiatives and work within a dynamic team environment. Job Responsibilities Manage the Security Assessment and Authorization (SAA) process for new and legacy Information Systems Provide baseline security controls recommendations based on system categorization and information type Coordinate and recommend Interconnection Security Agreements (ISAs), MOUs, and MOAs for agency IS interconnections Review and approve System Security Plans (SSP) independently Schedule and coordinate security control assessments and inspections with system owners and security teams Submit final SAA packages to Authorizing Officials for security Authorization to Operate (ATO) decisions Advise Authorizing Officials on system vulnerabilities and residual risks Ensure completion and testing of Plan of Action and Milestones (POA&M) actions Coordinate event-driven re-authorizations and decommissioning of Information Systems Maintain accurate documentation and serialization of security ATO communications Required skills Risk Management Framework (RMF) Federal Information Security Management Act (FISMA) Security Assessment and Authorization (SAA) Tenable Nessus IBM Guardium HP WebInspect Network Mapper (NMAP) Certified Information Systems Security Professional (CISSP) Cybersecurity Clearance Management System Security Plan (SSP) Review Preferred skills Global Information Security Professional (GISP) CompTIA Advanced Security Practitioner (CASP) Certified Chief Information Security Officer (CCISO) Certified Cloud Security Professional (CCSP) Certified Information Security Manager (CISM) GIAC Security Leadership Certification (GSLC) GIAC Certified Enterprise Defender (GCED) GIAC Certified Incident Handler (GCIH) Education requirements Degree Bachelor Major Computer Science Job Requirements Current U.S. Government Top Secret Clearance with SCI and CI-Polygraph eligibility U.S. Citizenship is mandatory Minimum 7 years experience as an ISSR or related role in a cleared facility At least 10 years of work experience in computer science or cybersecurity-related fields Familiarity with security tools such as Tenable Nessus, IBM Guardium, HP WebInspect, and Network Mapper (NMAP) Possession of at least one relevant certification such as CISSP, GISP, CASP, CCISO, CCSP, CISM, GSLC, GCED, or GCIH Strong knowledge of Risk Management Framework (RMF), FISMA coordination, and Assessment and Authorization (A&A) processes Excellent communication and coordination skills to work with system owners and authorizing officials Ability to manage security assessment and authorization packages and ensure compliance with internal security policies Demonstrated ability to handle sensitive information with integrity and professionalism

Created: 2026-03-10