> Markdown version of [/jobs/ext/1856339-tier-ii-linux-administrator-ts-sci-with-polygraph](https://www.wearedevelopers.com/jobs/ext/1856339-tier-ii-linux-administrator-ts-sci-with-polygraph). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Tier II Linux Administrator - TS/SCI with Polygraph - **Company:** General Dynamics Information Technology - **Location:** Springfield, VA, United States - **Experience:** Expert - **Salary:** $124,093.0 - $161,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Word, Java (Programming Language), Microsoft Excel, Multitier Architecture, Microsoft Windows, Active Directory, Amazon Web Services, Microsoft Azure, Bash Shell, Microsoft Outlook, CentOS, CompTIA Security+, Dynamic Host Configuration Protocol, Linux, Distributed File Systems, Domain Name System (DNS), Perl (Programming Language), Microsoft Exchange Server, Firefox, Desktop Environments, Monitoring of Systems, Web Browsers, Python (Programming Language), Lightweight Directory Access Protocols (LDAP), Linux System Administration, System Center Operations Management, System Center Configuration Manager, Windows Servers, Nagios, NetApp Applications, Citrix Systems, Windows PowerShell, Red Hat Enterprise Linux, Remote File Sharing, Ansible, Ruby, Samba (Software), Shell Script, Virtualization Technology, Zabbix, Google Cloud, Enterprise Software Applications, Cloud Platform System, Containerization, Information Technology, 3-tier Architectures, Puppet, Isilon, Cisco, Fedora, Docker, Servicenow, Vmware - **Published:** July 18, 2026 - **Apply:** https://dejobs.org/x/x/3D0DD3AA2D2445CB82E2BF285F374508/job/ ## About the Role Linux Environments,Red Hat Enterprise Linux (RHEL),System Administration Experience: 8 + years of related experience, * Bachelors Degree in Computer Science, Engineering or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience. * 8+ years of related systems administration experience * TS/SCI with Polygraph is required. * Candidate must possess an appropriate and current DoD Information Assurance (IA) Certification to be considered for employment; either valid CompTIA Security+ CE, Systems Security Certified Practitioner (SSCP) or Cisco Certified Network Associate (CCNA)-Security . CompTIA Security+ CE Certification is the preferred certification. In addition, candidate must attain the required DoD 8570 Computing Environment (CE) Training within six (6) months of Hire Date. Successful candidates are expected to have related experience and knowledge/understanding of: * Active Directory Administration * DNS, DHCP, DFS, LDAP in a Windows or Linux environment * Windows 10, Server 2012, Server 2016 * Application Troubleshooting such as Outlook, Excel, Word, JAVA, Internet Explorer, Firefox * Linux Operating system as a server or desktop (RHEL 6/7/8, CentOS 6/7/Stream, Scientific Linux 6/7, Fedora) * Understanding of Samba and NFS file sharing protocols * Understanding of ServiceNow, NETS or other ticketing process * ITIL v3 or higher The following knowledge/skill set is not required but is a plus: * Microsoft System Center Configuration Manager * PowerShell * Virtualization Environments (VMware, Citrix) * Profile management utilizing the VMware User Experience Management (UEM) toolset * Microsoft Exchange * Telephone/Video support * Networking * Familiarity with site specific customer and mission * Linux scripting (Python, Perl, Ruby, Bash) * Gnome and KDE desktop environments * Puppet or Ansible experience * Linux Kickstart * Red Hat Satellite or Foreman/Katello * Dell/EMC Isilon and Netapp storage appliances * Experience with monitoring tools like SCOM, Zabbix or Nagios * DoD STIG hardening * Containerization (Docker, Podman) * Cloud environments (AWS, Azure, Google Cloud) ## Description Seize your opportunity to make a personal impact as an Tier II Linux Administrator supporting our intelligence customer. GDIT is your place to make meaningful contributions to challenging projects and grow a rewarding career., At GDIT, people are our differentiator. As an Systems Administrator will help ensure today is safe and tomorrow is smarter. Our work depends on a TS/SCI cleared professional joining our team to support or intelligence customer in Springfield, VA., General Dynamics Information Technology (GDIT) is seeking an IT Engineer with Microsoft Enterprise Systems Administrator Advisor or Red Hat Enterprise Linux (RHEL) experience to join our team in support of a Federal Intelligence Agency contract. In addition to receiving a competitive salary and generous health and personal benefits, the IT Engineer will enhance their skill set among a talented and technically accomplished group of colleagues. Primary responsibilities include providing Tier II support maintaining multiple large Enterprise environments. The supporting infrastructure includes multiple Microsoft based networks spanning multiple security enclaves within a hybrid (Windows & RHEL) operating environment., System Administrative Advisory duties to include management of both physical and VDI based Windows and Linux workstations * Troubleshoot user, workstation and application functionality, performance and incident resolution for both Linux and Windows based applications * Identifies, analyzes, and resolve incidents with both short-term workarounds and long-term solutions * Provide remote end user support and remotely work with geographically disperse Tier 2 and Tier 3 team members * Communicate effectively (in oral and written form) with a variety of individuals and team members in both small and large team environments * Willingness to participate in special projects as needed ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Coffee with Developers: David Heinemeier Hansson](https://www.wearedevelopers.com/videos/875-coffee-with-developers-david-heinemeier-hansson) - [The best of two worlds - Bringing enterprise-grade Linux to the vehicle](https://www.wearedevelopers.com/videos/67-the-best-of-two-worlds-bringing-enterprise-grade-linux-to-the-vehicle) - [My journey into DevOps world - How it all started!](https://www.wearedevelopers.com/videos/545-my-journey-into-devops-world-how-it-all-started) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [System change: restart as developer?](https://www.wearedevelopers.com/magazine/39-system-change-restart-as-developer) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)