Linux Administrator

Job Title: Linux Administrator

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: Secret

Employee Type: Regular-Long Term Assignment

Percentage of Travel Required: Up to 10%

Type of Travel: Local

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The Opportunity:

Join a high-impact infrastructure engineering team responsible for architecting, securing, and maintaining enterprise-scale Linux environments. Lead modern automation and Infrastructure as Code (IaC) initiatives. Drive adoption of modern container orchestration and next-generation Agentic AI tooling to streamline
sysadmin workflows and proactive operations. Collaborate closely with development and DevOps teams to establish robust CI/CD deployment pipelines and automated platform management. Opportunity for continuous professional growth within a collaborative, forward-thinking technology organization.

Responsibilities:

• Manage, configure, and maintain high-availability Enterprise Linux servers across production and non-production environments.
• Design, write, test, and maintain robust Ansible playbooks, roles, and automated workflows for
• configuration management and patch automation.
• Deploy, manage, and troubleshoot containerized workloads using Docker and Kubernetes orchestration
• platforms.
• Build, optimize, and maintain CI/CD automation pipelines using GitHub Actions, Azure DevOps, and
• Ansible Automation Platform / AWX.
• Author modular Infrastructure as Code (IaC) templates and automation scripts to provision reproducible
• system architecture.
• Develop Python and Bash automation scripts for monitoring, incident triage, system diagnostics, and
• operational task execution.
• Leverage and integrate Agentic AI assistants and LLM-driven tooling to automate Linux administrative
• tasks, log analysis, and incident resolution.
• Maintain version control hygiene and code collaboration workflows using Git and GitHub (branching
• strategies, PR reviews, automation).
• Implement strict security hardening standards (CIS benchmarks, SELinux, RBAC), patch management,
• and vulnerability remediation.
• Participate in on-call rotation, performance tuning, capacity planning, and comprehensive disaster
• recovery drills.

Qualifications:

Required:

• Currently hold an Active Secret clearance with the ability to obtain and maintain a TS/SCI.
• Currently a US Citizen
• 5+ years of hands-on Enterprise Linux Administration experience (RHEL, CentOS, Rocky Linux, Ubuntu Server) in mission-critical environments.
• Extensive experience writing, testing, and deploying Ansible playbooks, roles, and inventory structures at scale.
• Proven experience deploying and managing containerized applications with Docker and container orchestration platforms (Kubernetes / OpenShift).
• Strong programming/scripting proficiency with Python and Bash for infrastructure automation and systems tooling.
• Solid experience with Git-based version control workflows and repository management (GitHub, GitLab).
• Hands-on experience building and executing CI/CD pipelines in Azure DevOps, GitHub Actions, or Ansible Workflows.
• Demonstrated experience defining and deploying Infrastructure as Code (IaC) using tools like Terraform, OpenTofu, or CloudFormation.
• Practical experience integrating Agentic AI tools / autonomous AI workflows to accelerate Linux administration, diagnostics, and script generation.

Desired:

• Industry certifications such as Red Hat Certified Engineer (RHCE), Certified Kubernetes Administrator
• (CKA), or Azure DevOps Engineer Expert.
• Experience integrating AI agents with enterprise APIs, MCP (Model Context Protocol), or operational
• chatops platforms.
• Familiarity with centralized observability and logging stacks (Prometheus, Grafana, OpenTelemetry,
• ELK/OpenSearch).
• Solid understanding of enterprise networking protocols, load balancers, DNS, SSL/TLS certificate
• lifecycle management, and firewall configuration.

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What You Can Expect:

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

Pay Range:

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is:

$82,700 - 173,900 USD