The selected candidate shall provide Subject Matter Expert (SME) support to the office of the Chief Information Security Officer (CISO) to ensure customer systems receive their Authority to Operate (ATO) with a security posture in accordance with DHS 4300A and NIST SP guidance. This support shall include providing IT security assessment and IT security audit functions to ensure FISMA compliance, support in developing and maintaining documentation in support of Certification & Accreditation (C&A) as required by the Federal Information Security Management Act (FISMA); ensuring all C&A and system security documentation is kept up to date; and ensuring systems meet all security requirements mandated by DHS 4300A and DHS Management Directives. Responsibilities include: Conduct security assessments and produce reports with the results and findings Develop Plan of Action & Milestone (POA&M) process and implementation strategy Recommends improvements and identifies metrics for remediation of information security weakness. Recommends strategies for overall organization to minimize risk Ensure proper access controls are implemented for both system access and physical access to data processing facilities Create, update and assess compliance of system Authority to Operate (ATO) packages Provide information security expertise to system development teams throughout the System Engineering Lifecycle process Independently manages workload and provides guidance to less experienced staff Required Qualifications: Active SECRET clearance required. Ability to obtain DHS EOD suitability or Current DHS EOD preferred. Education and Experience: Typically Requires a Bachelor's degree or equivalent, and 8 to 12 years of related experience in information security Masters degree preferred At least three years of experience working with FISMA Demonstrated expertise in SELC, Information Security processes, audits, tools, implementation, FISMA, NIST, IT security Knowledge of information security best practices, Enterprise Architecture, DHS experience Experience with Xacta IA manager strongly preferred. Desired Qualifications: Any DoD 8570 approved baseline certifications (e.g. CISSP, CEH, CAP, CISM) Company Description: CACI employs a diverse range of talent to create an environment that fuels innovation and fosters continuous improvement and success. Join CACI, where you will have the opportunity to make an immediate impact by providing information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian clients. A member of the Fortune 1000 Largest Companies and the Russell 2000 Index, CACI provides dynamic careers for approximately 15,000 employees working in over 120 offices worldwide. CACI is an Equal Opportunity Employer - Females/Minorities/Protected Veterans/Individuals with Disabilities.