ACAS Administrator

MANTECH seeks a motivated, career and customer-oriented Assured Compliance Assessment Solution (ACAS) Administrator to join our team in Doral, FL.

Responsibilities include but are not limited to:

• Installing, configuring, maintaining, and administering SecurityCenter/Tenable.sc and Nessus scanners across enterprise environments.
• Conducting routine automated and manual vulnerability scans, analyzing scan results, and generating compliance reporting dashboards.
• Collaborating with system administrators, network engineers, and cybersecurity leadership to remediate detected system vulnerabilities.
• Maintaining ACAS application baselines, scanner updates, feed updates, and configuration management controls.
• Creating, updating, and documenting custom scan policies, credentials management, and target zone assignments.
• Conducting diagnostic troubleshooting, system performance optimization, and patch management for vulnerability scanning infrastructure.
• Recommending and implementing process improvements to streamline vulnerability management workflows and security compliance.

Minimum Qualifications:

• Bachelor’s degree in Cybersecurity, Computer Science, Information Technology, or a related field with 5+ years of experience in vulnerability management or systems administration.
  • OR a master’s degree and 3+ or more years of relevant experience
  • OR an associate’s degree and 7+ or more years of relevant experience
  • OR a high school diploma and 9+ or more years of relevant experience
• Proven experience configuring, deploying, and maintaining Assured Compliance Assessment Solution (ACAS) SecurityCenter/Tenable.sc and Nessus scanners.
• Strong background in vulnerability management, credentialed scanning, patch verification, and risk assessment methodologies.
• Experience maintaining system baselines, configuration management controls, and technical reporting workflows. Experience creating, maintaining, and communicating complex technical documentation and vulnerability mitigation plans.

Preferred Qualifications:

• Relevant professional certifications such as CompTIA Security+, Tenable Certified ISO/Administrator, or CISSP.
• Prior experience supporting U.S. Military Command operations or Department of Defense enterprise technical environments.
• Familiarity with DoD STIG implementation, DISA vulnerability management requirements, and automated compliance tools.
• Demonstrated ability to collaborate effectively across multi-disciplinary engineering teams in dynamic operational settings.

Clearance Requirements:

• Must hold a current/active top secret security clearance.

Physical Requirements:

• Must be able to remain in a stationary position 50%.
• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.