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# Senior ISSO

- **Company:** Everforth Apex
- **Location:** Forest Heights, MD, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Word, Microsoft Excel, Systems Engineering, Cyber Security, Federal Information Processing Standards (FIPS), Information Security Management, Microsoft Software, Microsoft PowerPoint, Systems Development Life Cycle, Plan of Action and Milestones
- **Published:** October 15, 2026
- **Apply:** https://www.dice.com/job-detail/748d3909-62ed-4907-8002-614c0e00a06d

## About the Role

A Bachelor's degree with 6+ years of relevant work experience is required. A Master's degree is preferred. Extensive, direct experience may be considered in lieu of a degree., * Proven experience in IT security management and compliance, specifically with FISMA, DHS 4300 Series, and NIST directives.

 * Direct experience leading Authority to Operate (ATO) and Risk Management Framework (RMF) processes is strongly preferred.
 * Experience focused on compliance and security documentation is critical.

Technical Skills:

 * In-depth knowledge of FISMA, DHS 4300, and FIPS requirements.
 * Ability to conduct security assessments and audits.
 * Proficiency in Microsoft applications (MS Word, Excel, PowerPoint, Project).
 * Strong analytical and problem-solving skills.

Preferred Qualifications

 * Experience supporting federal projects, particularly for DoD or FEMA.
 * Experience managing matrix teams in a fast-paced, mission-critical environment.

## Description

We are recruiting a Senior Information System Security Officer (ISSO) to serve as a subject-matter expert supporting federal security compliance. This pivotal role ensures the security and compliance of customer systems throughout the Risk Management Framework (RMF) lifecycle. The Senior ISSO will be the primary point of contact for government counterparts, supporting security compliance, documentation, and proactive preparation of submissions in alignment with federal security standards., * Serve as the subject-matter expert and primary point of contact for federal agency counterparts, supporting security compliance and documentation.

 * Lead systems' Authority to Operate (ATO) efforts and maintain compliance with FISMA, DHS 4300 Series, and NIST standards.
 * Create, update, and assess the readiness of system Authority to Operate (ATO) packages.
 * Develop, update, and review required security artifacts and ensure all system security documentation is current.
 * Translate technical requirements effectively between security stakeholders and technical architects.
 * Conduct IT security assessments and support IT security audits to ensure compliance.
 * Maintain Plan of Action & Milestone (POA&M) reports, ensuring security vulnerabilities are tracked and reported.
 * Provide information security expertise to system development teams throughout the System Engineering Lifecycle.