Linux Systems Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Continental US * * * 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: 1. Install, configure, and maintain Red Hat Enterprise Linux servers and related software. 2. Perform routine system monitoring, performance tuning, and troubleshooting to ensure system reliability and performance. 3. Maintain Puppet manifests and modules to automate configuration and deployment tasks. 4. Implement Puppet best practices to ensure efficient and consistent management of infrastructure resources. 5. Perform version control and testing of Puppet code changes. 6. Collaborate with other teams to provision and configure Linux servers to meet application and business requirements. 7. Develop and maintain infrastructure as code (IaC) scripts and templates to facilitate server deployments. 8. Install patches according to the Patch Management Plan leveraging Satellite and YUM. 9. Respond and resolve service outages, technical queries and other system related issues. 10. Create and maintain system documentation, including procedures and configurations. 11. Train and assist other team members on Linux and job-related tasks. Required Qualifications: 1. Active TS/SCI security clearance. 2. Minimum of Six (6) years’ relevant IT work experience. 3. Security + CE certification or equivalent. 4. Proven experience as a Linux Administrator with a focus on Red Hat Enterprise Linux. 5. Strong proficiency in Puppet configuration management, including writing/maintaining Puppet manifests and modules. 6. Solid understanding of Linux server virtualization and containerization technologies (e.g., VMware, Docker). 7. Knowledge of scripting languages (e.g., Ansible, Bash, Python) for automation tasks. 8. Familiarity with version control systems (e.g., Git). 9. Excellent problem-solving skills and the ability to work effectively in a team environment. Desired: 1. Bachelor’s degree in computer science, information technology, or a related field (or equivalent work experience) 2. Minimum of two year’s DCGS experience 3. Relevant certification (e.g., RHCE, Puppet Certified Professional, Linux Essentials) are a plus. 4. Experience with one or more of the following technologies: YUM, RedHat Satellite, Kickstart, Harbor, Kubernetes. 5. 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 takes pride in fostering a diverse and accessible culture where every individual feels supported to chart their own path. 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. **Your potential is limitless.** So is ours. Learn more about CACI here. (https://careers.caci.com/global/en/life-at-caci) ______________________________________________________________________________ **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. Learn more here (https://careers.caci.com/global/en/employee-benefits) . The proposed salary range for this position is: $68,400-$143,700 _CACI is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, age, national origin, disability, status as a protected veteran, or any other protected characteristic._