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Linux Administrator

CACI

$86,600 - $181,800
Sep 2, 2025
Chantilly, VA, USA
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Manage and support enterprise Linux systems that are mission-critical to national security operations.

Requirements

  • 5+ years of experience in Linux system administration (RHEL, CentOS, or Ubuntu preferred).
  • Strong knowledge of system hardening, patch management, and security compliance.
  • Hands-on experience with shell scripting and automation tools (Bash, Python, Ansible, Puppet, or similar).
  • Experience with troubleshooting performance issues at system and application levels.
  • Familiarity with networking concepts (TCP/IP, DNS, DHCP, firewalls).
  • Understanding of storage systems (SAN, NAS, iSCSI, NFS) and backup/recovery solutions.
  • Experience with containerization technologies (Docker, Kubernetes, OpenShift).

Responsibilities

  • Install, configure, secure, and maintain Linux servers (RHEL, CentOS, Ubuntu, or similar distributions).
  • Perform system administration tasks including user management, patching, monitoring, and troubleshooting.
  • Support system hardening and compliance with DoD/Federal security standards (STIGs, DISA, NIST).
  • Manage storage, backup, and recovery solutions for Linux environments.
  • Develop and maintain automation scripts (Bash, Python, Ansible, Puppet, or similar) for system provisioning and configuration management.
  • Support virtualization platforms (VMware, KVM, Hyper-V) and containerized workloads (Docker, Kubernetes).
  • Monitor system performance, availability, and capacity; implement proactive solutions.

Other

  • Active Top Secret clearance (SCI eligibility strongly preferred).
  • Ability to work effectively in a secure, team-oriented, mission-driven environment.
  • Bachelor’s degree in Computer Science, Information Systems, or related discipline (or equivalent work experience).
  • Experience in federal government or DoD environments.
  • Experience with DevOps practices and CI/CD pipelines.