Information System Security Officer; ISSO

Information System Security Officer (ISSO)

Full time | Federal Staffing Solutions Inc. | United States

Posted On 09/04/2026

Technology

City Ashburn

State/Province Virginia

20146

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We are looking for an ISSO to work in Ashburn, VA supporting our client.

Location: Ashburn, VA

Clearance: Secret Clearance (or able to obtain)

Salary Rate: $150,000-$180,000

Position Summary:

Our client is seeking an experienced Information System Security Officer (ISSO) to support a U.S. Customs and Border Protection (CBP) program in Ashburn, VA. The ISSO will serve as the principal point of contact for the security posture of one or more assigned information systems, ensuring compliance with DHS, CBP, and NIST cybersecurity policies throughout the system's lifecycle. This role works closely with the Information System Security Manager (ISSM), Authorizing Official (AO), system owners, and technical teams to maintain a strong Risk Management Framework (RMF) posture and support continuous authorization to operate (ATO).

Key Responsibilities:

• Serve as the primary ISSO for assigned CBP information systems, acting as the liaison between the ISSM, AO, system owners, and technical staff on all security-related matters.
• Execute the NIST Risk Management Framework (RMF) lifecycle, including system categorization, security control selection, implementation, assessment, authorization, and continuous monitoring.
• Develop, update, and maintain security authorization artifacts, including System Security Plans (SSPs), Security Assessment Reports (SARs), Plans of Action and Milestones (POA&Ms), Contingency Plans, and Risk Assessments.
• Support Assessment and Authorization (A&A) activities and coordinate Security Control Assessments (SCAs) with independent assessors.
• Monitor and track POA&M remediation activities, ensuring vulnerabilities are addressed within DHS/CBP-mandated time frames.
• Conduct continuous monitoring activities in accordance with DHS 4300A / CBP security policy and the organization's Information Security Continuous Monitoring (ISCM) strategy.
• Review vulnerability scan results (e.g., Nessus, ACAS) and coordinate remediation with system administrators and engineering teams.
• Support incident response activities for assigned systems, including detection, reporting, and coordination with the Security Operations Center (SOC).
• Ensure system configurations align with applicable security baselines (e.g., DISA STIGs, CIS Benchmarks) and DHS/CBP policy.
• Participate in Configuration Control Board (CCB) activities to assess the security impact of proposed system changes.
• Prepare for and support audits, inspections, and compliance reviews conducted by DHS, CBP, or external oversight bodies.
• Maintain awareness of, and ensure compliance with, applicable federal cybersecurity laws, regulations, and guidance, including FISMA, NIST SP 800-53, and FIPS publications.

Required Qualifications:

• Ability to obtain and maintain a CBP Background Investigation (BI) / Public Trust clearance; existing favourable CBP or DHS suitability determination preferred.
• Bachelor's degree in Cybersecurity, Information Technology, Computer Science, or a related field, or equivalent professional experience in lieu of degree.
• Minimum of 3–5 years of hands‑on experience performing ISSO, ISSM, or comparable information systems security duties on federal information systems.
• Working knowledge of the NIST Risk Management Framework (RMF), NIST SP 800-37, and NIST SP 800-53 security controls.
• Familiarity with DHS 4300A Sensitive Systems Policy or equivalent federal agency security policy.
• Experience preparing or maintaining ATO documentation (SSP, SAR, POA&M, Contingency Plan).
• Strong written and verbal communication skills, with the ability to translate…