Infrastructure/Systems Administration

CACI International•Danbury, CT

1d•$103,800 - $218,100•Hybrid

About The Position

CACI is seeking an Infrastructure/Systems Administrator to support a zero-trust research and development IT environment. The role supports a secure, compliant infrastructure integrating on-premises and cloud-based technologies across CACI programs. Provides hands-on administration and technical support across Linux, Windows, and macOS servers and workstations. Works collaboratively with Systems Administrators, engineers, and corporate IT teams to troubleshoot complex infrastructure issues and deliver reliable technical solutions. Contributes to continuous improvement, security hardening, compliance, documentation, and operational excellence.

Requirements

Bachelor's degree in Information Technology, Computer Science, or a related field, or equivalent experience.
5–7 years of hands-on Systems Administration experience supporting Linux and Windows environments.
Working knowledge of at least 3–4 of the following areas: Patch/package management using Satellite, Landscape, MECM, Tanium, or similar tools; Identity and privileged access management using Centrify or similar PAM technologies; Scripting and automation using Bash, Python, PowerShell, or similar languages; Cloud platforms including AWS or Azure, or virtualization technologies such as VMware or Nutanix; Security hardening, encryption, endpoint security, or device-control technologies.
Strong analytical, troubleshooting, and problem-solving skills.
Ability to work independently with minimal supervision and take ownership of assigned technologies and services.
Strong written and verbal communication skills with the ability to collaborate across technical, engineering, and support teams.
Ability to create and maintain accurate technical documentation and operational procedures.
Demonstrated ability to evaluate customer IT requirements and develop effective infrastructure solutions.

Nice To Haves

Experience supporting a zero-trust architecture or security environment.
Familiarity with containerization technologies, including Docker or Podman.
Enterprise-level macOS administration experience.
Familiarity with WinMagic SecureDoc or comparable full-disk encryption technologies.
Exposure to device-control technologies such as USBGuard, DriveLock, or Microsoft Defender.

Responsibilities

Administer multi-OS environments including Red Hat, Ubuntu, Windows, and macOS across servers and workstations.
Troubleshoot infrastructure issues involving servers, storage, networking, and security in remote and on-site environments.
Perform patching, package management, and compliance activities using tools such as Red Hat Satellite, Landscape, Foreman, MECM, or similar technologies.
Manage identity and access services, including authentication and privileged access management using Centrify or comparable PAM solutions.
Support AWS, Azure, VMware, Nutanix, or similar cloud and virtualization platforms.
Collaborate with engineering, security, and support teams to resolve complex cross-platform infrastructure issues.
Support a zero-trust security posture through system hardening, encryption, device controls, and security best practices.
Support NIST compliance and security requirements within the IT environment.
Utilize Splunk and related monitoring/logging technologies for system visibility, troubleshooting, and operational support.
Develop, maintain, and improve technical documentation, procedures, and operational standards.
Identify opportunities to improve infrastructure processes, tooling, automation, and service delivery.
Evaluate IT requirements for internal, remote, and external customers and develop effective technical solutions.
Independently manage assigned services and technologies while maintaining accountability for operational performance.
Propose new ideas, challenge existing processes when appropriate, and contribute to continuous improvement initiatives.