Vulnerability Management & ACAS Administrator

Leidos is seeking an Vulnerability Management & ACAS Administrator to support large-scale operations on a high-profile Department of War contract in Fort Belvoir VA. The I3TS program provides enterprise-wide IT support to enable the Defense Threat Reduction Agencys Information Management & Technology Directorate to consolidate modernize and continuously improve delivery of IT services and mission capabilities to internal and external mission partners operating in CONUS and OCONUS locations.

The selected candidate will serve as the primary ACAS subject-matter expert and technical lead for the programs vulnerability scanning capability across NIPRNet SIPRNet and the Joint Worldwide Intelligence Communications System (JWICS). This position requires an experienced independent professional who can oversee day-to-day ACAS operations maintain scanner health and coverage analyze findings produce actionable reporting and coordinate remediation activities with system owners and technical teams.

Primary Responsibilities:

• Serve as the primary technical lead and subject-matter expert for Assured Compliance Assessment Solution (ACAS) and Nessus vulnerability-scanning operations across NIPRNet SIPRNet and JWICS environments.
• Administer operate maintain and troubleshoot ACAS/Nessus infrastructure including scanners scan configurations scan schedules policies plugins credentials and associated management components.
• Ensure ACAS scanning capability asset coverage scanner health and vulnerability-data quality are maintained across all supported environments.
• Plan coordinate and execute authenticated and unauthenticated vulnerability scans in accordance with approved schedules operational requirements and maintenance windows.
• Analyze scan results; validate findings; identify false positives duplicate findings and scan-quality issues; and assess the potential impact to supported systems and mission operations.
• Prioritize vulnerabilities based on severity operational impact exploitability asset criticality and applicable remediation timelines.
• Coordinate with system administrators network engineers endpoint-security personnel and system owners to facilitate vulnerability remediation and verify closure.
• Track vulnerabilities remediation actions exceptions findings and status in approved tracking systems.
• Develop and maintain vulnerability-management metrics dashboards trend analysis and recurring reports for technical personnel program leadership and customer stakeholders.
• Identify and resolve ACAS coverage gaps credentialed-scan failures connectivity issues scanner performance issues and asset-inventory discrepancies.
• Support Security Technical Implementation Guide (STIG) compliance activities by correlating ACAS findings with hardening requirements and remediation actions.
• Develop and maintain ACAS standard operating procedures operating instructions scan procedures troubleshooting guides and knowledge articles.
• Coordinate ACAS maintenance upgrades configuration changes and technical support activities with applicable infrastructure network endpoint and cybersecurity teams.
• Provide technical guidance to leadership and stakeholders on ACAS capabilities vulnerability trends remediation priorities and operational risk.
• Work independently to manage competing requirements and meet short- mid- and long-term vulnerability-remediation timelines.

Basic Qualifications:

• Bachelors degree and 7 years of relevant cybersecurity vulnerability management systems administration or information assurance experience; or additional relevant experience in lieu of a degree.
• At least 7 years of hands-on experience serving as an ACAS/Nessus subject-matter expert in a large enterprise or Department of War environment.
• Demonstrated experience administering and operating ACAS/Nessus infrastructure including scanner deployment configuration health monitoring scan-policy administration plugin management credentialed scanning troubleshooting and reporting.
• Experience managing vulnerability scanning operations across multiple security domains including NIPRNet SIPRNet and JWICS or comparable enterprise environments.
• Experience analyzing vulnerability findings validating scan results identifying false positives prioritizing remediation and verifying closure.
• Experience developing vulnerability-management reports metrics dashboards and leadership-level status products.
• Experience coordinating remediation efforts with system administrators network teams endpoint-security teams and system owners.
• Working knowledge of Microsoft Windows Linux virtualization technologies networking concepts and enterprise endpoint environments.
• Working knowledge of STIG compliance SCAP Compliance Checker (SCC) STIG Viewer secure configuration baselines and security-hardening practices.
• Must meet DoD 8570.01-M Information Assurance Technical (IAT) Level II baseline certification requirements. Acceptable certifications include CompTIA Security CE or a higher-level certification that satisfies the IAT Level II requirement. Must also meet applicable DoD 8140 Cyberspace Workforce Qualification Program requirements for the assigned DoD Cyber Workforce Framework work role(s) as required by the contract and customer.
• Must currently possess and maintain an active Top Secret/Sensitive Compartmented Information (TS/SCI) clearance.
• Strong written verbal organizational analytical and problem-solving skills.
• Ability to work independently as the programs primary ACAS technical lead while coordinating effectively with cross-functional technical teams.

Preferred Qualifications:

• Tenable Assured Compliance Assessment Solution (ACAS) 201 certification.
• Experience integrating or correlating ACAS data with asset-management endpoint-security configuration-management ticketing or vulnerability-tracking tools.
• Experience using Tanium Trellix Microsoft Defender for Endpoint or comparable endpoint-security and endpoint-management platforms to support vulnerability remediation and asset validation.
• Experience developing automated reports dashboards or data-analysis products using PowerShell Python SQL or similar tools.
• Experience supporting vulnerability exception management risk acceptance workflows Plans of Action and Milestones and remediation governance.
• Relevant Tenable vulnerability-management Microsoft Linux or cybersecurity certifications.

If youre looking for comfort keep scrolling. At Leidos we outthink outbuild and outpace the status quo because the mission demands it. Were not hiring followers. Were recruiting the ones who disrupt provoke and refuse to fail. Step 10 is ancient history. Were already at step 30 and moving faster than anyone else dares.

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job education experience knowledge skills and abilities as well as internal equity alignment with market data applicable bargaining agreement (if any) or other law.