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# Linux Systems Administrator - Secret Clearance required

- **Company:** General Dynamics IT
- **Location:** Arlington, VA, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, User Authentication, Bash Shell, Configuration Management, Software Documentation, CompTIA Security+, Cyber Security, Linux, Disaster Recovery, Domain Name System (DNS), Identity and Access Management, Junos, Python (Programming Language), Lightweight Directory Access Protocols (LDAP), Linux System Administration, Network Administration, Red Hat Enterprise Linux, Ansible, RSA (Cryptosystem), Service Pack, Simple Network Management Protocols, TCP/IP, Virtualization Technology, Scripting, Identity Services Engine, Enterprise Software Applications, Software Troubleshooting, Reliability of Systems, Gitlab, SC Clearance, Information Technology, RSA SecurID, Cisco, Vmware
- **Published:** August 13, 2026
- **Apply:** http://hbcu.com/cgi-bin/jobs/searchJobs.cgi?job_id=35182209

## About the Role

Linux Systems Administrator Transform technology into opportunity as a Linux Systems Administratorwith GDIT. In this role, you will support missioncritical enterprise IT systems and contribute to the modernization of agency operations. At GDIT, our people make the difference. As an Linux Systems Administrator, you will help ensure todays operations remain secure while enabling a smarter tomorrow. GDIT is seeking a motivated Linux Systems Administrator to support mission critical enterprise infrastructure and network management applications within a Department of Defense environment. This position is ideal for an infrastructure professional with strong Linux administration fundamentals who wants to expand their expertise across enterprise network management, identity and access management, automation, cybersecurity, and infrastructure management technologies. Prior experience with all supported applications is not required. The selected candidate will work alongside experienced engineers, restoration. Apply security patches, vulnerability mitigations, DISA STIG requirements, and approved configuration standards. Develop Bash, Python, or other approved scripts to automate recurring administrative activities. Support Ansible and GitLab based automation and configuration management. Identify opportunities to improve system reliability, reduce manual activities, and increase operational efficiency. Maintain system documentation, standard operating procedures, configuration information, troubleshooting guides, and recovery procedures. Participate in cross training, business hours operational support, and scheduled on call support.WHAT YOULL NEED TO SUCCEED (Required)Education: Bachelors Degree. An additional 4 years of experience may be substituted in lieu of degree. Clearance: Active DoD Secret clearance or higher at time of hire. Certification(s):Current CompTIA Security+ CE or equivalent certification meeting applicable DoD cybersecurity workforce requirements. Technical
Certification: Current certification in at least one relevant technical discipline, such as: RHCSA or RHCE Red Hat Ansible certification Linux Foundation certification Equivalent Linux, networking, virtualization, or infrastructure certification Experience: 3 to 5 years of professional experience in Linux administration, systems administration, infrastructure engineering, enterprise application support, or a related technical discipline.At least 2 years of hands on Linux administration experience in a production environment.Experience troubleshooting operating system, application, connectivity, or infrastructure issues.Preferred Qualifications: Red Hat Enterprise Linux experience. Bash or Python scripting. Ansible and GitLab experience. Knowledge of TCP/IP, DNS, LDAP, SNMP, and enterprise networking fundamentals. Experience applying DISA STIG requirements. Experience supporting classified, disconnected, or air gapped environments. Exposure to ISE, ClearPass, RSA, InfoBlox,
CloudVision, AirWave, Cisco Prime, Junos Space, or similar enterprise infrastructure platforms. What Will Make You Successful: Strong troubleshooting and analytical skills. Technical curiosity and ability to learn unfamiliar technologies. Initiative to identify problems and improvement opportunities. Interest in automation and continuous improvement. Ability to document and share technical knowledge. Ability to collaborate across systems, networks, cybersecurity, monitoring, and application teams. GDIT IS YOUR PLACEAt GDIT, the mission is our purpose, and our people are at the center of everything we do. Growth: AI-powered career tool that identifies career steps and learning opportunities Support: An internal mobility team focused on helping you achieve your career goals Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off Community: Award-winning culture of innovation and a military-friendly workplaceOWN YOUR
OPPORTUNITYExplore an enterprise IT career at GDIT and youll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

## Description

and progressively develop expertise across the enterprise application environment. How an Linux System Administrator will make an impact: Administer and maintain Red Hat Enterprise Linux systems supporting mission critical enterprise applications. Perform operating system installation, configuration, patching, upgrades, troubleshooting, and lifecycle maintenance. Monitor operating system and application health, resource utilization, storage, logs, services, and system performance. Troubleshoot Linux operating system, application, storage, connectivity, authentication, and performance issues. Support Linux systems operating within VMware and other virtualized environments. Support enterprise applications including Cisco ISE, Aruba ClearPass, RSA SecurID, LDAP,InfoBlox,CloudVision,AirWave, Cisco Prime, Junos Space,CyberSecureIMS, and related infrastructure management technologies. Participate in application upgrades, maintenance, configuration changes, testing, troubleshooting, and service


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