Information System Security Officer

Information System Security Officer


Location: Washington, DC (On-site)


Role Overview

We are seeking an Information System Security Officer to join a team supporting a federal agency. The role involves ensuring the security and compliance of information systems, working with system owners and cybersecurity professionals to implement and maintain security controls. This position plays a direct part in safeguarding mission-critical systems and data. The work schedule is generally Monday through Friday during standard business hours, with the potential for 24/7 support during disaster operations.


Key Responsibilities

• Support customer systems throughout the Risk Management Framework (RMF) lifecycle.
• Develop and maintain documentation to support Certification & Accreditation (C&A) as required by FISMA.
• Manage the end-to-end Authority to Operate (ATO) package process.
• Ensure proper access controls are implemented for system access and physical access to data processing facilities.
• Provide information security expertise to system development teams throughout the System Engineering Lifecycle (SELC) process.
• Maintain and track Plan of Action & Milestones (POA&M) reports for vulnerabilities.
• Investigate security incidents to determine the extent of compromise to information and automated systems.
• Configure and validate secure systems and test security products to detect weaknesses.
• Support security documentation and architecture reviews.
• Brief leadership and support client-facing deliverables.

Required Qualifications


Clearance: Ability to obtain/maintain DOD Top Secret/SCI Clearance & DHS EOD Clearance.


Education & Experience:

• Bachelor's degree and 7 years of applicable experience, or 13 years of applicable experience in lieu of a degree.
• A minimum of 3 years of experience working with FISMA.
• Experience as an ISSO or ISSO Manager supporting federal systems.

Technical Skills & Certifications:

• Demonstrated expertise in SELC, Information Security processes, audits, tools, FISMA, NIST, and DHS 4300A.
• Must hold at least one of the following IAT Level III qualifications: Certified Information System Security Professional (CISSP), CompTIA Advanced Security Practitioner (CASP+), or other applicable IAT or IAM cybersecurity professional certifications.
• Experience with Xacta IA Manager and/or CSAM.

Preferred Qualifications

• Certified Authorization Professional (CAP).
• Previous experience with federal civilian or defense agencies.

Compensation & Benefits

The anticipated salary range for this position is $100,000.00 to $110,000.00 annually. A comprehensive benefits package is available to eligible employees.


This employer is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.


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.

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Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.

Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

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