Hiring: Tier 2 Linux Administrator - TS/SCI with polygraph Company: General Dynamics Information Technology Location: Fort Belvoir, VA Job Posted Time: 2026-09-10 11:13:14 Employment Type: Remote Target Skills & Keywords : AI, CentOS, DNS, Java, Linux, Microsoft Excel, Microsoft Office, PowerShell, RHEL, Red Hat, ServiceNow, Ubuntu, User Experience About the job Experience: •5 + years of related experience •General Dynamics Information Technology (GDIT) is seeking a highly skilled •With strong experience in Linux system administration and strong competency in Microsoft Enterprise Systems to provide •Tier 2 support for a large Federal Intelligence Agency. This role is part of a high-performing team that supports mission-critical infrastructure across multiple security enclaves and hybrid environments, with a primary focus on RHEL-based systems and secure Linux operations. •As a Tier 2 engineer, you will be responsible for advanced troubleshooting, system optimization and user support for Linux platforms while also supporting Windows systems as needed to ensure optimal performance and operational continuity. Required Skills: •Linux, Microsoft Enterprise Technologies, Red Hat Enterprise Linux (RHEL) •Provide Tier 2 support for incident resolution and user issues in a mixed Windows/Linux enterprise environment. •Perform Linux system administration (RHEL, CentOS, Ubuntu), including user management, permissions, and basic performance diagnostics. •Support Windows workstations and servers 9Windows 10, Server 2012/2016) as required, including Active Directory, Group Policy, DNS, DHCP and DFS. •Troubleshoot application crashes, system performance issues, and connectivity problems. •Deliver remote and on-site end-user desktop support, resolving escalated technical issues effectively and efficiently. Qualifications: •Bachelor’s degree in Computer Science, Information Systems, or related field (or equivalent work/military experience). •Minimum 5+ years of experience in systems administration, with demonstrated Tier 2 support capabilities. •Active TS/SCI with Polygraph clearance. •Current DoD 8570 IAT Level II Certification (e.g., CompTIA Security+ CE, SSCP, or CCNA-Security). Security+ CE preferred. •Must obtain the appropriate Computing Environment (CE) training within six (6) months of hire. •Windows operating systems (Windows 10, Server 2012/2016) •Active Directory, DNS, DHCP, DFS, LDAP •Troubleshooting Microsoft Office applications (Outlook, Excel, Word), Java, and web browsers •Operational familiarity with ITSM tools such as ServiceNow •Strong verbal and written communication skills Compensation: •$110,500 - $149,500 / year •Flexible work environment (work from home / hybrid options) •Competitive benefits and rewards package Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!