Information System Security Officer (ISSO)

Job Description

Job Description

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. The effort spans IL5 work (Secret) and IL6 work on the TS side, which ZTI supports.
Citizenship: U.S. Citizen (required).
Certification: Active DoD 8140 IAT/IAM Level II or higher.
Reports To: Information System Security Manager (ISSM).

POSITION SUMMARY:
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&Ms, 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.

KEY RESPONSIBILITIES:

• 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&Ms, 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 escalate 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.

REQUIRED QUALIFICATIONS:

• 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+ CE, 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&Ms.
• 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.

DESIRED QUALIFICATIONS:

• 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.

BENEFITS:

• 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 in a classified, high-impact DoW environment.
• Full benefits package details provided during the offer process.

EQUAL OPPORTUNITY STATEMENT:
ZTI Solutions is an Equal Opportunity / Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, marital status, protected veteran status, disability status, or any other characteristic protected by law. ZTI Solutions provides reasonable accommodations for applicants and employees with disabilities; if you require an accommodation to apply or interview, please let us know.

IMPORTANT NOTES:
Security Clearance: Active Secret clearance required prior to start date, with the ability to obtain TS/SCI; TS/SCI preferred. The effort includes IL5 work (Secret) and IL6 work on the TS side. Applicants must be U.S. Citizens and able to pass a background investigation and maintain clearance.

Engagement: ZTI Solutions is filling this position as a subcontractor on a multinational IL5/IL6 collaboration effort. Final selection is subject to an interview with the prime contractor / customer.

Work Requirements: Onsite work required at Ft. Meade, MD — 5 business days per week. No remote work options available. Standard business hours with occasional flexibility for operational needs.