The Opportunity:
ACAS System Administrator providing cybersecurity support for Naval Tactical Command Support System (NTCSS). Responsible for vulnerability management, Risk Management Framework (RMF) implementation, and security compliance for DoD Business IT systems supporting Navy aviation, afloat, and shore activities.

Responsibilities:

• Administer enterprise ACAS architecture (Tenable SecurityCenter, Nessus scanners/Agents) across classified/unclassified networks

• Execute complete vulnerability lifecycle: scanning, identification, remediation coordination, and validation

• Develop and maintain RMF A&A package documentation in eMASS per DoD/Navy guidance

• Perform STIG testing, security control assessments, and compliance validation using STIG Viewer/SCAP tools

• Manage POA&M entries documenting security deficiencies, mitigation strategies, and remediation timelines

• Apply security patches and configuration changes across Windows/Linux environments per DoD standards

• Generate vulnerability reports supporting compliance requirements and risk management decisions

• Ensure compliance with STIGs, IAVAs, NIST standards, and DISA cybersecurity directives

• Coordinate with network, system administration, and cybersecurity teams for ACAS integration

• Maintain technical documentation and compliance evidence for audits and authorizations
  Qualifications:
  Required: 

• Clearance: Active Secret clearance - REQUIRED

• Education: Bachelor's degree in Computer Science, IT, Cybersecurity, or related field OR HS Diploma/GED with additional experience

• Experience: 5 years (Bachelor's) OR 7 years (HS/GED) in cybersecurity operations, vulnerability management, and RMF A&A processes; hands-on experience with ACAS/Tenable and eMASS; working knowledge of DoD RMF processes

• Certifications: CompTIA Security+ (IAT Level II) or equivalent - REQUIRED; DoD 8570.01-M and DoD 8140 compliance; valid CSWF credentials

• Technical Skills: ACAS architecture (SecurityCenter, Nessus); vulnerability management; DoD compliance (STIGs, IAVAs, NIST); RMF documentation; eMASS workflows; Windows/Linux administration; networking fundamentals; end-to-end vulnerability management

Desired:

• Possess advanced cybersecurity certifications

• Experience with VRAM, PDQ, Trellix, Active Directory, VMware, Python scripting

• DoD Business IT systems or Navy/DoD Echelon II/III commands support experience

• SCAP, STIG Viewer, Agile/DevSecOps, Jira, Confluence proficiency

• Senior leadership briefing and technical mentoring experience

What You Can Expect:

 A culture of integrity.

Pay Range:

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is: