Linux Systems Administrator

CACI; Hampton (VA); On-site; USD 75,000 - 158,000; Full time

Benefits offered by this job

Shift differential pay

Job summary

CA C I is seeking a cleared Linux Systems Administrator to manage Red Hat Enterprise Linux environments and leverage Puppet for automation. The role requires on-site work at Langley AFB and an active TS/SCI clearance.

Ideal candidates bring 5+ years in IT, strong Puppet skills, familiarity with virtualization (VMware) and containers (Docker), and scripting experience in Bash/Python. Shift differential pay is offered for 24/7 support needs.

Qualifications

• Active TS/SCI clearance required.
• Bachelor’s degree in computer science, information technology or related field (or equivalent).
• Minimum 5 years of IT work experience.
• Security+ CE certification or equivalent.
• Proven experience as a Linux Administrator with focus on RHEL.
• Strong Puppet configuration management experience, including manifests/modules.
• Knowledge of virtualization and containerization (VMware, Docker).
• Scripting in Bash/Python for automation.
• Familiarity with Git for version control.
• Excellent problem-solving and teamwork abilities.

Responsibilities

• Install, configure, and maintain Red Hat Enterprise Linux servers and related software.
• Monitor performance, tune systems, and troubleshoot to ensure reliability.
• Maintain Puppet manifests and modules to automate config and deployment.
• Implement Puppet best practices for consistent infrastructure management.
• Version control and test Puppet code changes.
• Collaborate with teams to provision Linux servers for applications.
• Develop IaC scripts and templates for deployments.
• Install patches per Patch Management Plan using Satellite and YUM.
• Respond to outages and technical queries; document procedures.
• Train team members on Linux and related tasks.

Skills

Puppet configuration management

Linux administration

Problem solving

Team collaboration

Scripting (Bash, Python)

Education

Bachelor’s degree in computer science or related field

Security+ CE certification or equivalent

RHCE / Puppet Certified Professional / Linux Essentials (optional)

Tools

Red Hat Enterprise Linux

VMware

Docker

Git

Ansible

Kubernetes

RedHat Satellite

Job description

Job Title: Linux Systems AdministratorJob Category: Information TechnologyTime Type: Full timeMinimum Clearance Required to Start: TS/SCIEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: Continental US

The Opportunity

We are seeking a cleared, skilled and experienced Red Hat Enterprise Linux Administrator with expertise in Puppet configuration management to join our IT team. The ideal candidate will play a crucial role in integrating, maintaining and optimizing our Linux-based infrastructure, ensuring its stability, security, and scalability. You will also be responsible for leveraging Puppet automation to streamline system provisioning, configuration, and management processes.

MUST be willing to work onsite at Langley AFB and have an active/current TS/SCI. Applicants with demonstrated experience supporting real-time 24/7/365 support in a shift work environment, highly desired. (Shift differential pay offered.)

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.

Qualifications

Required:

• 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.

Desired:

• Minimum of two year’s DCGS experience
• Relevant certification (e.g., RHCE, Puppet Certified Professional, Linux Essentials) are a plus.
• Experience with one or more of the following technologies: YUM, RedHat Satellite, Kickstart, Harbor, Kubernetes.
• Experience with shift work

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: $75,200-$158,100

CACI is an Equal Opportunity 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 other protected characteristic.