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CACI International Linux Administrator - ACAS in Springfield, Virginia

Linux Administrator - ACAS

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI with Polygraph

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Local

CACI's Transport & Cybersecurity Services (TCS) program is currently seeking to hire a Linux Administrator - ACAS to join our Vulnerability Testing Services team in either Springfield, VA (or) St. Louis, MO.

TCS offers a long-term, CACI prime contract opportunity supporting the National Geospatial-Intelligence Agency’s (NGA) GEOINT mission. Our team of talented Network and Cybersecurity professionals help design, develop, procure, implement, operate/sustain, and enhance NGA networks and cybersecurity posture in support of national security.

Joining the TCS Team means working with truly cutting-edge technologies, on high performing cyber engineering teams, and gaining valuable skills to accelerate your professional growth!

What You’ll Get to Do

  • Provide all preventative and corrective maintenance to ensure consistent, reliable, and secure service availability. This includes all actions required to return the service to full operational capability such as vendor RMA processes, removal and proper disposal of broken equipment/software, installation and testing of new equipment/software, and configuration of new equipment/software

  • Perform day-to-day maintenance, and specific scheduled maintenance activities that result from manufacturers recommended service intervals, alerts, bulletins, available patches, and updates according to agency approved change management processes. This includes maintaining updated documentation, change logs, and service bulletin libraries for all supported equipment and software in the CSOC knowledge management platform

  • Execute emergency maintenance actions with sufficient urgency to preclude unacceptable outage durations, approved by the Government prior to execution, and coordinated through and approved by CSOC and ESC government management

  • Perform all development, engineering, testing, integration, and implementation actions necessary for major vendor revisions

  • Perform continuous engineering assessments to improve the performance, effectiveness, coverage, and maturity of this service. These assessments are limited to improvements that can be achieved without the purchase of additional hardware or software

  • Perform all development, design, engineering, testing, integration, and implementation actions necessary to perform a full technology refresh every four years or upon Asset contract recompete, whichever comes first (Note: The assets supporting this service are acquired through a DoD contract). This includes the removal and disposal of the legacy capability

More About the Role

  • Operate all assets assigned to this service within the Government Furnished Information - Software Tools list in accordance with vendor instructions, industry best practice, and government directives, polices, procedures, etc.

  • Ensure all required data is routed to the DoD CMRS database in the appropriate format, and validate the accuracy of data contained within CMRS weekly

  • Configure all assets assigned to this service within the Government Furnished Information - Software Tools list in accordance with all customer laws, directives, orders, polices, guidance, procedures etc.

  • Ensure this service provides 100% coverage of all applicable customer enclaves, domains, information flows, and devices. Provide weekly reports to CSOC government leadership on any people, processes, or technology challenges preventing the achievement of 100% coverage

  • Use various monitoring, analysis, and visualization tools to track effectiveness, status, performance metrics, and other information as needed or required by CSOC government staff and contractors assigned Cybersecurity Operations Services and Cybersecurity Readiness Services

  • Track vendor end of life and end of support status for assets in CDRL D0009 Asset Inventory Perform all development, design, engineering, testing, integration, and implementation actions needed for the total integration and interoperability between all applicable assets in the Government Furnished Information - Software Tools list.

  • Utilize agency approved ticketing systems to document, track, assign, update, and coordinate all engineering, integration, configuration, and maintenance actions

  • Report as vendor updates are received

You’ll Bring These Qualifications


  • Top Secret/SCI clearance (current), with the ability to successfully obtain/maintain a polygraph (post-hire).

Education / Experience:

  • Bachelor’s Degree and or equivalent experience in a related field and Six (6) years of relevant experience. Additional experience may be considered in lieu of a degree.


  • DoD 8570 IAT III (current); CSSP Analyst certifications must be obtained within 120 days of hire date


  • Expert at operating and maintaining Linux systems

  • Experience operating and maintaining applications hosted in a Linux environment

  • Experience with vulnerability management applications, such as Nessus or ACAS

What We Can Offer You:

  • We’ve been named a Best Place to Work by the Washington Post.

  • Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives.

  • We offer competitive benefits and learning and development opportunities.

  • We are mission-oriented and ever vigilant in aligning our solutions with the nation’s highest priorities.

  • For over 55 years, the principles of CACI’s unique, character-based culture have been the driving force behind our success.


Company Overview: At CACI, you will have the opportunity to make an immediate impact by providing information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian customers. CACI is an Equal Opportunity Employer – Females/Minorities/Protected Veterans/Individuals with Disabilities.

As a federal contractor, CACI is subject to any federal vaccine mandates or other customer vaccination requirements. All new hires are required to report their vaccination status.