Cloud Infrastructure Systems Administrator- LINUX Admin

CACI International Inc; Denver (CO); On-site; USD 105,000 - 231,000; Full time

Job summary

CACI International Inc in Denver seeks a highly skilled Linux Infrastructure Systems Administrator to manage workstation and cloud-based Linux servers, including Nutanix-based infrastructure and AWS resources. Strong Linux command-line expertise and cloud service understanding are required, with experience across on-prem and cloud environments.

The role demands DoD 8570 IAT Level II certification (Security+ or CISSP) or ability to obtain within 1–2 months, a Bachelor's degree in a related field,

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• DoD 8570 IAT Level II certification (Security+ or CISSP) must have or be willing to obtain within 1-2 months of starting.
• 10-12 years of experience in server/desktop Linux system administration and network troubleshooting.
• Knowledge of DevOps practices and methodologies.
• Willingness to learn new technologies.

Responsibilities

• Workstation and Server support: Local Linux Desktop support; Remote Linux Server cloud-based server support; Support local and remote “Cloud-in-a-box” infrastructure (Nutanix); Hardware deployment and troubleshooting.
• Cloud Infrastructure Management: Manage and Maintain cloud-based resources (AWS); IPA; Puppet; Ansible; Documentation.
• Network support: Troubleshoot cloud-based network infrastructure and local networks; configure switches and settings for deployed hardware.

Skills

Linux administration

DevOps practices

Network troubleshooting

10-12 years Linux/admin experience

Willingness to learn

Education

Bachelor’s degree in Computer Science / Information Technology

DoD 8570 IAT Level II certification (Security+ or CISSP)

Tools

Puppet

Ansible

Kubernetes

IPA

Terraform

CloudFormation

Packer

Nutanix

Proxmox

Job description

Job Title: Cloud Infrastructure Systems Administrator- LINUX Admin

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI with Polygraph

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Continental US

Anticipated Posting End: 12/31/2026

The Opportunity:

We are seeking a highly skilled and experienced Linux admin to work with our dynamic team of IT professionals. The ideal candidate will have experience with cloud environments, an understanding of cloud services, and a strong Linux command line understanding. Looking for candidates with some variety of the skills listed below

Responsibilities:

Workstation and Server support:

• Local Linux Desktop support
• Remote Linux Server cloud-based server support
• Support local and remote “Cloud-in-a-box” infrastructure (Nutanix)
• Comfortable with hardware deployments and troubleshooting

Cloud Infrastructure Management:

• Manage and Maintain cloud-based resources (AWS)
• IPA
• Puppet
• Ansible
• Documentation

Network support:

• Support troubleshooting efforts for our cloud base network infrastructure
• Support/troubleshoot local network issues
• Help configure network switches and settings for deployed hardware.

Qualifications:

Required:

• Current DoD 8570 IAT Level II certification (Security+ or CISSP) – must have or willing to get within 1-2 months of starting.
• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• +/- 10 - 12 years of experience in server/desktop Linux system administration and network troubleshooting.
• Knowledge of DevOps practices and methodologies
• Willingness to learn new technologies

Desired:

• Knowledge of Puppet, IPA, and Kubernetes
• Juniper and/or Cisco Switch experience
• Experience or understanding of “Cloud-in-a-Box” Solutions such as Nutanix
• Experience with Proxmox
• Experience with Ansible and scripting
• Experience with Packer kickstarts and AMI creation yeah
• Using Infrastructure as Code (IaC) technologies to support provisioning cloud and on-prem resources (Terraform, CloudFormation)

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.

Since this position can be worked in more than one location, the range shown is the national average for the position.

The proposed salary range for this position is:

$105,100-$231,100

CACI is anEqualOpportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any otherprotectedcharacteristic.