CACI International Inc · 11 hours ago
Sr. Linux Systems Engineer
Sterling, VA
Full-time
Onsite
Mid, Senior Level
$104K/yr - $218K/yr
5+ years expCACI International Inc is looking for a Linux Administrator in a DoD Environment. The ideal candidate will have extensive experience in Linux systems administration, automation, security implementations, and integration with enterprise directory services.
Information TechnologyService IndustrySoftware
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Install, configure, and maintain Linux operating systems on both physical and virtual environments using kickstarts
Develop and maintain infrastructure as code using Puppet and Ansible
Implement and maintain security configurations following Department of Defense (DoD) Security Technical Implementation Guides (STIGs)
Proactively troubleshoot complex Linux-related issues and implement solutions
Manage user access and authentication using Centrify and Active Directory
Ensure compliance with DoD security policies and procedures
Take initiative in improving systems, processes, and security measures
Collaborate with other IT teams to maintain system reliability and security in a classified environment
Qualification
Required
Active: TS/SCI with Full Scope Polygraph
Bachelor's degree in computer science, Information Technology, or related field experience
Current Security+ certification
5+ years of experience as a Linux Systems Administrator in a DoD or similar secure environment
Proven experience installing and configuring Linux on physical servers and virtual machines
Strong knowledge of Puppet and Ansible for configuration management and automation
Active Directory integration
Familiarity with Active Directory and LDAP
Demonstrated ability to work independently and take initiative
Excellent troubleshooting skills for Linux systems and applications
Experience implementing and maintaining security configurations based on DoD STIGs
Experience with Centrify for Linux
Preferred
Additional relevant certifications (e.g., RHCE, LFCS, CISSP)
Experience with network devices (routers, switches, firewalls) and cabling
Knowledge of FISMA, NIST, and other security frameworks
Experience with cloud platforms (AWS, Azure, or GCP) in classified environments
Scripting skills in Bash, Python, or Perl
Benefits
Healthcare
Wellness
Financial
Retirement
Family support
Continuing education
Time off benefits
Company
CACI International Inc
At CACI International Inc (NYSE: CACI), our 25,000 talented and dynamic employees are ever vigilant in delivering distinctive expertise and technology to meet our customers’ greatest challenges in national security.
10001+ employees
Funding
Current Stage
Public CompanyTotal Funding
$1B2025-05-21Post Ipo Debt· $1B
2003-01-10IPO
Leadership Team
John Mengucci
President & CEO
Darryl W Burke
Senior Vice President / Air Force Client Executive
Recent News
Washington Technology
2026-01-25
2026-01-22
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