Senior Information System Security OfficerWe are seeking a Senior Information System Security Officer (ISSO) to support federal systems throughout the Risk Management Framework (RMF) lifecycle. This role involves leading systems' Authority to Operate (ATO) efforts and maintaining a security posture in compliance with federal standards. The ideal candidate will have extensive hands-on and leadership experience in information security for government environments.Key Responsibilities:Lead the end-to-end RMF lifecycle and the development of Authority to Operate (ATO) packages.Manage the Plan of Action & Milestones (POA&M) process, including vulnerability tracking, prioritization, and remediation.Provide information security guidance to system development teams throughout the System Engineering Life Cycle (SELC).Lead security audits, accreditation efforts, compliance reviews, and readiness assessments.Conduct incident response, threat assessments, and investigations of security incidents.Perform security architecture reviews and design secure, integrated solutions.Ensure information assurance, including confidentiality, integrity, and availability, across all systems.Oversee continuous monitoring activities and ensure systems meet all mandated security requirements.Lead client engagements, brief senior leadership, and mentor junior team members.Evaluate and recommend security improvements, technologies, and processes.Required Qualifications:A minimum of 15 years of applicable experience with a Bachelor's degree, or 21 years of experience without a degree.
This must include experience leading the RMF lifecycle and developing ATO packages, along with senior-level expertise in information security processes, audits, and tools.Skills:Must be a U.S. Citizen.Expertise in FISMA, NIST, and other federal compliance frameworks.Experience with Xacta IA Manager and/or CSAM.Must possess one of the following IAT Level III certifications: CISSP, CASP+, or an equivalent certification.Preferred Qualifications:Certified Authorization Professional (CAP).Prior experience in a lead or supervisory ISSO role.Background in enterprise security architecture and strategy.Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning.
We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.