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Information Systems Security Officer (ISSO) - Level III (Remote)

RSSi / OneZero Solutions
Portsmouth, VA Remote Full Time
POSTED ON 4/27/2026
AVAILABLE BEFORE 5/21/2026
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Information Systems Security Officer (ISSO) - Level III (Remote)

  • Portsmouth, VA, USA
  • Salary
  • Full Time

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We are an employee-centric company that truly appreciates our team members and their value to our customers and the missions they support. We pride ourselves on being forward-leaning thinkers and fostering teams that are and continue to be technically proficient and technically capable across a comprehensive range of cyber mission areas. OneZero full-time employees receive an extremely competitive benefits package that includes health/dental/vision/life insurance plans, 401K with company matching, PTO & paid holidays, employee referral program, and educational assistance. Additional details can be found on our website at: https://www.onezerollc.com/careers/

Position Title: Information Systems Security Officer III (ISSO)

Location: Portsmouth, VA (Remote) onsite presence may be required if classified work is assigned

Clearance: Secret

Job Summary

As a USCG Information Systems Security Officer (ISSO) at OneZero Solutions, you will play a crucial role in supporting our USCG customers in Portsmouth, VA. Your responsibilities will focus on ensuring the security and compliance of information systems within the Department of Homeland Security (DHS). Specifically, you will be involved in the following areas:

  • Risk Management Framework (RMF): You will execute the RMF process to achieve and maintain Authority to Operate (ATO) security authorizations for USCG mission systems.
  • Continued Security Compliance: Through the execution of prescribed and ad hoc ISCM tasks, you will deliver cybersecurity compliance throughout the engineering lifecycle for the systems under our purview.
  • Security Assessments and Audits: Conduct security assessments, identify vulnerabilities, and recommend corrective actions.
  • Incident Response: Monitor security events and incidents, investigate suspicious activity, and take appropriate action to mitigate risks.
  • Security Awareness and Training: Manage security awareness and training programs for DHS personnel.
  • Collaboration: Work closely with IT engineering teams and program stakeholders to integrate security controls into system development and implementation processes.
  • Program Relevance: Keep abreast of evolving security threats, vulnerabilities, and industry best practices and work with program stakeholders to enhance and maintain program relevancy and improve efficiency.
  • Documentation: Document security policies, procedures, and activities.

Qualifications

  • 7 years of direct experience serving as an Information Systems Security Officer (ISSO) within the DoD/Federal Government.
  • Working knowledge of the DoD eMASS GRC tool and workflows
  • Demonstrated understanding of information security principles and best practices, including network security, system security, encryption, and incident response.
  • Proficiency in various security assessment methodologies, standards, and tools, including DoD RMF System Security Assessment and Authorization (SA&A), Vulnerability Management and Continuous Monitoring, and FISMA Compliance, and STIG Hardening
  • Experience with relevant security frameworks and standards, such as NIST Cybersecurity Framework, FISMA, RMF, FedRAMP, and DoD control overlays
  • Documented in experience in the assessment of Platform IT and OT systems and environments.
  • Excellent analytical and problem-solving skills.
  • Strong written and verbal communication skills.
  • Ability to work independently and as part of a team.
  • Must local to the Hampton Roads Virginia area.
  • Must be willing to go on site for critical meetings and work to be performed at the classified level.

Education

  • One or more of the following certifications: CISM, CISSP, GSLC
  • Preferred: Bachelor's degree or higher in Cyber Security or other Information Technology field of study

OneZero Solutions, LLC 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, age, pregnancy, genetic information, disability, status as a protected veteran, or any other protected category under applicable federal, state, and local laws.

To request an accommodation, please contact us at recruiting@onezerollc.com or call (202) 987-2580.

Salary.com Estimation for Information Systems Security Officer (ISSO) - Level III (Remote) in Portsmouth, VA
$107,300 to $128,170
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