Infrastructure/Systems Administrator

CACI International Inc

Infrastructure/Systems Administrator maintaining and enhancing IT infrastructure for CACI. Collaborating with teams to ensure crucial applications perform effectively while resolving issues.

Posted 7/7/2026full-timeSterling • Colorado, Texas, Virginia • 🇺🇸 United StatesSeniorLead💰 $105,100 - $231,100 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates extensive experience in IT infrastructure management, including system administration, security measures, and troubleshooting across Linux operating systems. Proven ability to collaborate with cross-functional teams and manage large projects in a fast-paced environment.

Highest-signal resume keywords

Active TS/SCI ClearanceLinux Operating SystemsSystem AdministrationAnalytical SkillsProject Management

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

IT Infrastructure ManagementSystems Analysis TechniquesTroubleshootingSecurity PatchesOperating System UpgradesConfiguration DocumentationNetwork ConnectivityUser SystemsStorage ManagementAdvanced Security Measures

Soft Skills

Team-OrientedFast-Paced Environment AdaptabilityInvestigative SkillsCollaborationCustomer-Facing Experience

Certifications & Qualifications

Bachelor's Degree or Equivalent Experience

Industry Keywords

Infrastructure ProjectsTechnical Environment IntegrityCross-Departmental ProcessesRobust Security MeasuresOff-Hours Support

Tech Stack

Tools & technologies

LinuxTypeScript

About the role

Key responsibilities & impact

Resolve IT hardware and software infrastructure issues (servers, network, security, etc.) using advanced systems analysis techniques
Analyze, troubleshoot, and resolve issues with IT infrastructure, including user systems, servers, storage, and network connectivity
Provide system administration for assigned infrastructure and ensure robust security measures are in place
Apply security patches and operating system upgrades to maintain the security and integrity of the technical environment
Support new infrastructure projects and initiatives
Maintain comprehensive configuration documentation for all assigned infrastructure
Collaborate closely with architects, technical leads, software developers, testers, security teams, and stakeholders
Be available for off-hours work as needed for support and deployments

Requirements

What you’ll need

Active TS/SCI w/ poly
Bachelor's degree in a related field or equivalent experience in lieu of a degree
Minimum 10 years of related experience
Extensive experience with Linux operating systems in development/test and production environments
Prior experience in a corporate or customer-facing role
Demonstrated ability to work in a team-oriented, fast-paced environment
Strong analytical and investigative skills to understand and resolve complex problems
Experience managing large projects or processes that span multiple departments

Benefits

Comp & perks

healthcare
wellness
financial
retirement
family support
continuing education
time off benefits