ACAS Administrator

Our team has an immediate need for an ACAS Administrator to support vulnerability management and security compliance within a Network Operations Center (NOC) environment. The ACAS Administrator will conduct network and application vulnerability scanning, configuration assessments, and security monitoring across a complex, enterprise-scale network.


This position is responsible for maintaining and monitoring Assured Compliance Assessment Solution (ACAS) infrastructure, managing scanner updates, troubleshooting scanning systems, and implementing configuration changes to maintain compliance with Department of Defense (DoD) security requirements. The ideal candidate will have hands-on experience with ACAS, Tenable Nessus, vulnerability management, and Security Technical Implementation Guides (STIGs).


Location: Pensacola, Florida

Schedule: Monday to Friday onsite, no remote or hybrid options available.

Clearance: Active Secret

Certification: CompTIA Security+ or equivalent

Education: High School


Key Responsibilities

• Administer and maintain ACAS Security Center and Nessus scanning infrastructure within an enterprise NOC environment.


• Perform network and application vulnerability scans and configuration assessments to identify security weaknesses and compliance gaps.


• Update ACAS Security Center and Nessus scanners with weekly plugins and security feeds to support continuous monitoring of the network security posture.


• Monitor, manage, and troubleshoot multiple ACAS scanners to ensure scanning availability, accuracy, and operational effectiveness.


• Analyze vulnerability scan results, identify security findings, and assist with prioritizing remediation activities.


• Provide technical guidance and support to field technicians performing break/fix activities on workstations and servers.


• Maintain and administer two HV and Secure File Transfer Protocol (SFTP) servers, including performing weekly updates and maintenance.


• Develop, implement, and maintain system configuration changes to ensure compliance with applicable DISA STIG requirements.


• Identify and assist in remediating system vulnerabilities, configuration deficiencies, and security compliance issues.


• Support continuous monitoring activities by maintaining accurate vulnerability scanning data and system security documentation.


• Coordinate with network operations, cybersecurity, and technical support personnel to address identified vulnerabilities and maintain system security.


• Ensure all administrative activities and system updates are performed in accordance with applicable DoD security policies and operational procedures.

Required Qualifications

• High School Diploma or equivalent.


• Active DoD Secret security clearance.


• CompTIA Security+ certification or equivalent.


• Demonstrated experience administering or supporting ACAS and Nessus vulnerability scanning tools.


• Experience conducting network vulnerability scans and configuration assessments.


• Knowledge of vulnerability management processes and security remediation practices.


• Familiarity with DISA STIGs and DoD security compliance requirements.


• Experience troubleshooting enterprise IT infrastructure, including servers and workstations.


• Strong analytical, troubleshooting, and problem-solving skills.


• Ability to document technical findings and communicate security issues effectively.

Preferred Qualifications

• Experience supporting ACAS Security Center in a large-scale enterprise network environment.


• Experience administering and troubleshooting multiple Nessus scanners.


• Knowledge of vulnerability assessment methodologies and continuous monitoring requirements.


• Experience implementing DISA STIGs and remediating security configuration findings.


• Familiarity with Windows Server administration and system maintenance.


• Experience maintaining Hyper-V (HV) and SFTP servers.


• Previous experience supporting cybersecurity operations within a DoD or government contracting environment.


• Experience working in a 24x7x365 Network Operations Center (NOC).

The anticipated salary range for this role is between $75,000 - $79,000. The anticipated salary for this position is provided in accordance with applicable pay transparency laws. The final starting salary will be determined based on a variety of job-related factors, including the selected candidate's qualifications, skills, relevant experience, education, certifications, and work location (where applicable), as well as internal equity and market considerations.


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