Information System Security Officer; ISSO

Quick Overview

ZTI Solutions is seeking an Information System Security Officer (ISSO) to support the cybersecurity and Risk Management Framework (RMF) program for a multinational IL5/IL6 collaboration effort in an operational Department of War (DoW) environment hosting multiple Coalition Mission Partner Environments (MPE). This is a hands‑on role focused on day‑to‑day security operations, continuous monitoring, and maintaining the security posture and compliance of assigned systems across multiple enclaves.

Location: Ft. Meade, MD — Onsite, full‑time (5 business days/week). No remote option.

Clearance: Active Secret required, with the ability to obtain TS/SCI. TS/SCI preferred.

Citizenship: U.S. Citizen (required).

Certification: Active DoD 8140 IAT/IAM Level II or higher.

Reports To: Information System Security Manager (ISSM).

The ISSO supports the ISSM in implementing and maintaining the information system security program for assigned systems across classified, multinational, and mission‑critical enclaves. The ISSO executes the day‑to‑day RMF and continuous monitoring activities, maintains system security documentation, tracks vulnerabilities and POA&M, and ensures assigned systems remain compliant and operationally secure. The ideal candidate brings solid RMF knowledge, strong attention to detail, and the ability to work closely with the ISSM, infrastructure, operations, and mission partner teams to identify and address risks.

• Serve as the ISSO for assigned systems within a secure, multinational DoW environment.
• Support the ISSM in implementing and maintaining the information system security program and policies.
• Execute day‑to‑day RMF and continuous monitoring activities for assigned systems.
• Maintain and update system security documentation, including SSPs, and supporting RMF artifacts.
• Track and manage POA&M, coordinating timely remediation of findings and risks.
• Review ACAS vulnerability scan results and coordinate remediation with infrastructure and MPE teams.
• Support STIG compliance, system hardening, and IAVM remediation efforts.
• Monitor endpoint security and Trellix alerts for assigned systems and elevate as appropriate.
• Support security assessments, audits, and authorization activities under the direction of the ISSM.
• Document and report security incidents and support incident response activities.
• Monitor the security posture of assigned systems and identify emerging risks.
• Other duties, as assigned.

• U.S. Citizen.
• Active Secret security clearance with the ability to obtain TS/SCI (TS/SCI preferred).
• Active DoD 8140 IAT/IAM Level II or higher certification (e.g., Security+, CySA+, CAP, CISSP).
• 4+ years of overall IT experience, including at least 2 years of hands‑on experience in cybersecurity, RMF, or information assurance in an ISSO or equivalent role.
• Ability to work full‑time, onsite in Ft. Meade, MD, 5 business days per week.
• Working knowledge of the Risk Management Framework (RMF) and the DoD authorization (A&A) process.
• Experience maintaining system security documentation, SSPs, and POA&M.
• Experience reviewing ACAS/Tenable scan results and supporting vulnerability remediation.
• Familiarity with STIG compliance, system hardening, and IAVM remediation.
• Familiarity with endpoint security (Trellix ESS) and SIEM platforms such as Microsoft Sentinel.
• Strong attention to detail, organizational, problem‑solving, and communication skills.

• Bachelor’s degree in Computer Science, Information Security, or another STEM discipline.
• Active Top Secret clearance with the ability to obtain SCI.
• Experience supporting systems in a DISA‑administered DoW environment.
• Experience with Azure environments and cloud authorization (e.g., FedRAMP/DoD CC SRG).
• Experience supporting ATO packages and control implementation statements.
• Prior experience working alongside an ISSM and cybersecurity engineering teams.

• Competitive salary commensurate with experience and clearance.
• Comprehensive medical, dental, and vision coverage.
• Paid time off and federal holidays.
• 401(k) retirement plan.
• Professional development and certification support.
• Mission‑driven work…