Senior Linux Systems Administrator — Puppet & Onsite TS/SCI

CACI; Hampton (VA); On-site; USD 75,200 - 158,100; Full time

Job summary

CACI is seeking a cleared Linux Systems Administrator to join our IT team at Langley AFB. You will manage Red Hat Enterprise Linux environments, maintain Puppet manifests, and optimize infrastructure for stability and security.

The role requires TS/SCI clearance, 5+ years in IT, and experience with virtualization (VMware) and containers (Docker). You will contribute to automation, IaC, patching, and cross-team collaboration in a 24/7 shift-support context.

Qualifications

• Active TS/SCI security clearance.
• Bachelor’s degree in computer science, information technology, or a related field (or equivalent work experience).
• Minimum 5 years of relevant IT work experience.
• Security + CE certification or equivalent.
• Proven experience as a Linux Administrator with a focus on Red Hat Enterprise Linux.
• Strong proficiency in Puppet configuration management, including writing/maintaining Puppet manifests and modules.
• Solid understanding of Linux server virtualization and containerization technologies (e.g., VMware, Docker).
• Knowledge of scripting languages (e.g., Ansible, Bash, Python) for automation tasks.
• Familiarity with version control systems (e.g., Git).
• Excellent problem-solving skills and the ability to work effectively in a team environment.

Responsibilities

• Install, configure, and maintain Red Hat Enterprise Linux servers and related software.
• Perform routine system monitoring, performance tuning, and troubleshooting to ensure system reliability and performance.
• Maintain Puppet manifests and modules to automate configuration and deployment tasks.
• Implement Puppet best practices to ensure efficient and consistent management of infrastructure resources.
• Perform version control and testing of Puppet code changes.
• Collaborate with other teams to provision and configure Linux servers to meet application and business requirements.
• Develop and maintain infrastructure as code (IaC) scripts and templates to facilitate server deployments.
• Install patches according to the Patch Management Plan leveraging Satellite and YUM.
• Respond and resolve service outages, technical queries and other system related issues.
• Create and maintain system documentation, including procedures and configurations.
• Train and assist other team members on Linux and job-related tasks.

Skills

RHEL

Puppet

Linux

VMware

Docker

Git

Ansible

Python

Bash

Education

Bachelor's degree in Computer Science / IT

Tools

Kickstart

RedHat Satellite

YUM

Harbor

Kubernetes

Job description

CACI is seeking a cleared Linux Systems Administrator to join our IT team at Langley AFB. You will manage Red Hat Enterprise Linux environments, maintain Puppet manifests, and optimize infrastructure for stability and security.

The role requires TS/SCI clearance, 5+ years in IT, and experience with virtualization (VMware) and containers (Docker). You will contribute to automation, IaC, patching, and cross-team collaboration in a 24/7 shift-support context.