Infrastructure/Systems Administrator

About the role

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, providing hands-on administration and technical support across Linux, Windows and macOS servers and workstations. It involves collaboration with systems administrators, engineers and corporate IT teams, and contributes to security hardening, compliance, documentation and operational excellence. The position is full time, regular, with up to 10% local travel.

Key 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.
• Manage identity and access services, including authentication and privileged access management with Centrify or comparable PAM solutions.
• Support AWS, Azure, VMware, Nutanix or similar cloud and virtualization platforms.
• Support a zero-trust security posture through hardening, encryption, device controls and security best practices, and support NIST compliance requirements.
• Use Splunk and related monitoring and logging technologies for system visibility and troubleshooting.
• Maintain technical documentation, procedures and operational standards, and propose improvements to processes, tooling and automation.
• Evaluate IT requirements for internal, remote and external customers and deliver effective technical solutions.

Required profile

• 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 listed technical areas.
• Strong analytical, troubleshooting and problem-solving skills, able to work independently with minimal supervision.
• Strong written and verbal communication skills and ability to collaborate across technical, engineering and support teams.
• Ability to create and maintain accurate technical documentation and to evaluate customer IT requirements.

Required skills

• Patch/package management with Satellite, Landscape, MECM, Tanium or similar.
• Identity and privileged access management with Centrify or similar PAM technologies.
• Scripting and automation with Bash, Python, PowerShell or similar.
• Cloud platforms (AWS or Azure) or virtualization (VMware or Nutanix).
• Security hardening, encryption, endpoint security or device-control technologies.
• Desired: zero-trust architecture experience, Docker or Podman, enterprise macOS administration, WinMagic SecureDoc, USBGuard, DriveLock or Microsoft Defender.

What we offer

• Proposed salary range of $103,800 - $218,100, depending on location, contract category, experience, skills and education.
• Healthcare, wellness, financial, retirement, family support, continuing education and time-off benefits.
• A flexible time off benefit and access to learning resources.