{"schemaVersion":"jobsearcher.job.v1","id":"c46e58ecf457b7b9a03e97e5","url":"https://jobsearcher.com/jobs/c46e58ecf457b7b9a03e97e5","canonicalUrl":"https://jobsearcher.com/jobs/c46e58ecf457b7b9a03e97e5","title":"Linux Systems Administrator","description":"Your Impact\nOwn your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure.\nJob Description\nAdvance how our customers operate while you advance your career. Join GDIT as a Senior Linux Systems Administrator and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you.\n\nMEANINGFUL WORK AND PERSONAL IMPACT\nAs a Senior Linux Systems Administrator, the work you’ll do at GDIT will be impactful to the mission of USCENTCOM. You will play a crucial role in configuration, maintenance, and optimization of Linux-based server environments supporting a large-scale enterprise infrastructure. This role supports mission-critical systems across an environment of more than 5,000 users, 1,000 servers, and 10,000 endpoints. The administrator will collaborate closely with other Enterprise Services teams to ensure system availability, performance, security compliance, and operational efficiency in support of USCENTCOM mission requirements.\nDuties and Responsibilities\nConfigure, deploy, and maintain Linux server environments, including physical and virtual systems.\nAdminister Red Hat and CentOS Linux systems, ensuring stability, performance, and security compliance.\nConfigure and manage Linux services such as Apache, Nginx, DNS, DHCP, LDAP, and related system services.\nMonitor system performance and availability, proactively identifying and resolving issues before they impact operations.\nTroubleshoot and resolve complex system issues, including problems without existing documented solutions.\nImplement system patches, updates, and security hardening in accordance with DoD and organizational policies.\nManage SSL/TLS certificate lifecycle activities supporting Linux-based services.\nCollaborate with infrastructure, network, storage, and security teams to design and implement Linux-based solutions aligned with enterprise requirements.\nParticipate in system upgrades, migrations, and the deployment of new Linux infrastructure components.\nEnsure incidents, problems, and service requests are tracked, prioritized, escalated, and resolved appropriately.\nDevelop and maintain technical documentation, including system configurations, troubleshooting guides, and standard operating procedures.\nProduce reports and data sets to inform leadership of system performance, trends, and improvement opportunities.\nProvide technical mentorship and guidance to junior administrators and team members.\nSupport projects focused on improving the security, efficiency, scalability, and resilience of Linux environments.\nAssist in developing and enforcing system policies and best practices.\nParticipate in enterprise initiatives to modernize and standardize infrastructure services.\nContribute to continuous improvement efforts across Enterprise Services teams.\n\nWHAT YOU’LL NEED TO SUCCEED\nBring your technology expertise and drive for innovation to GDIT. The Systems Administrator Senior must have:\nCertification: Applicable DoD 8140 or DoD 8570 Certification (CompTIA Security + CE cert)\nExperience: 3+ years of related experience\nRequired skills:\nDemonstrated proficiency administering Red Hat and CentOS Linux systems in enterprise environments.\nStrong experience building, deploying, and maintaining Linux server infrastructures.\nExpertise in system performance tuning, availability management, and security hardening.\nExperience implementing patches, updates, and configuration changes in controlled environments.\nAbility to troubleshoot and resolve complex systems issues under operational constraints.\nStrong documentation skills for system configurations, procedures, and troubleshooting guides.\nProven ability to work collaboratively across multiple IT disciplines.\nDesired Skills:\nRed Hat Certified System Administrator (RHCSA) or higher\nITIL 4 Foundation Certification\nExperience supporting USCENTCOM environments and familiarity with mission systems and operational requirements.\nKnowledge of enterprise-scale infrastructure operations.\nExperience mentoring junior administrators and contributing to team development.\nSecurity clearance level: TS/SCI\nUS citizenship required\n\nGDIT IS YOUR PLACE\nAt GDIT, the mission is our purpose, and our people are at the center of everything we do.\nGrowth: AI-powered career tool that identifies career steps and learning opportunities\nSupport: An internal mobility team focused on helping you achieve your career goals\nRewards: Comprehensive benefits and wellness packages, 401K with company match, competitive pay and paid time off\nCommunity: Award-winning culture of innovation and a military-friendly workplace\n\n#ARMA\n#GDITPRIORITY\n#CENTCOM/CITS\nWork Requirements\nYears of Experience\n3 + years of related experience\nmay vary based on technical training, certification(s), or degree\nCertification\nCompTIA Security+ CE | CompTIA - CompTIA\nITIL 4 Foundation | PeopleCert - PeopleCert\nRed Hat Certified System Administrator (RHCSA) | Red Hat - Red Hat\nTravel Required\nLess than 10%\nCitizenship\nU.S. Citizenship Required\nSalary and Benefit Information\nThe likely salary range for this position is $98,472 - $133,228. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.\nView information about benefits and our total rewards program.\nOur Identity Verification Process\nAs part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.\nAbout Our Work\nWe are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.\nJoin our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc.\nEqual Opportunity Employer / Individuals with Disabilities / Protected Veterans","company":"General Dynamics Information Technology","rawCompany":"generaldynamicsinformationtechnology","city":"Tampa","state":"FL","isRemote":false,"isActive":false,"createdAt":"2026-08-05T00:13:59.981Z","occupations":[{"code":"15-1244.00","title":"Network and Computer Systems Administrators","slug":"network-and-computer-systems-administrators"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1299.01","title":"Web Administrators","slug":"web-administrators"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"518210","title":"Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services","slug":"computing-infrastructure-providers-data-processing-web-hosting-and-related-services"},{"code":"541513","title":"Computer Facilities Management Services","slug":"computer-facilities-management-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Linux Systems Administrator","description":"Your Impact\nOwn your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure.\nJob Description\nAdvance how our customers operate while you advance your career. Join GDIT as a Senior Linux Systems Administrator and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you.\n\nMEANINGFUL WORK AND PERSONAL IMPACT\nAs a Senior Linux Systems Administrator, the work you’ll do at GDIT will be impactful to the mission of USCENTCOM. You will play a crucial role in configuration, maintenance, and optimization of Linux-based server environments supporting a large-scale enterprise infrastructure. This role supports mission-critical systems across an environment of more than 5,000 users, 1,000 servers, and 10,000 endpoints. The administrator will collaborate closely with other Enterprise Services teams to ensure system availability, performance, security compliance, and operational efficiency in support of USCENTCOM mission requirements.\nDuties and Responsibilities\nConfigure, deploy, and maintain Linux server environments, including physical and virtual systems.\nAdminister Red Hat and CentOS Linux systems, ensuring stability, performance, and security compliance.\nConfigure and manage Linux services such as Apache, Nginx, DNS, DHCP, LDAP, and related system services.\nMonitor system performance and availability, proactively identifying and resolving issues before they impact operations.\nTroubleshoot and resolve complex system issues, including problems without existing documented solutions.\nImplement system patches, updates, and security hardening in accordance with DoD and organizational policies.\nManage SSL/TLS certificate lifecycle activities supporting Linux-based services.\nCollaborate with infrastructure, network, storage, and security teams to design and implement Linux-based solutions aligned with enterprise requirements.\nParticipate in system upgrades, migrations, and the deployment of new Linux infrastructure components.\nEnsure incidents, problems, and service requests are tracked, prioritized, escalated, and resolved appropriately.\nDevelop and maintain technical documentation, including system configurations, troubleshooting guides, and standard operating procedures.\nProduce reports and data sets to inform leadership of system performance, trends, and improvement opportunities.\nProvide technical mentorship and guidance to junior administrators and team members.\nSupport projects focused on improving the security, efficiency, scalability, and resilience of Linux environments.\nAssist in developing and enforcing system policies and best practices.\nParticipate in enterprise initiatives to modernize and standardize infrastructure services.\nContribute to continuous improvement efforts across Enterprise Services teams.\n\nWHAT YOU’LL NEED TO SUCCEED\nBring your technology expertise and drive for innovation to GDIT. The Systems Administrator Senior must have:\nCertification: Applicable DoD 8140 or DoD 8570 Certification (CompTIA Security + CE cert)\nExperience: 3+ years of related experience\nRequired skills:\nDemonstrated proficiency administering Red Hat and CentOS Linux systems in enterprise environments.\nStrong experience building, deploying, and maintaining Linux server infrastructures.\nExpertise in system performance tuning, availability management, and security hardening.\nExperience implementing patches, updates, and configuration changes in controlled environments.\nAbility to troubleshoot and resolve complex systems issues under operational constraints.\nStrong documentation skills for system configurations, procedures, and troubleshooting guides.\nProven ability to work collaboratively across multiple IT disciplines.\nDesired Skills:\nRed Hat Certified System Administrator (RHCSA) or higher\nITIL 4 Foundation Certification\nExperience supporting USCENTCOM environments and familiarity with mission systems and operational requirements.\nKnowledge of enterprise-scale infrastructure operations.\nExperience mentoring junior administrators and contributing to team development.\nSecurity clearance level: TS/SCI\nUS citizenship required\n\nGDIT IS YOUR PLACE\nAt GDIT, the mission is our purpose, and our people are at the center of everything we do.\nGrowth: AI-powered career tool that identifies career steps and learning opportunities\nSupport: An internal mobility team focused on helping you achieve your career goals\nRewards: Comprehensive benefits and wellness packages, 401K with company match, competitive pay and paid time off\nCommunity: Award-winning culture of innovation and a military-friendly workplace\n\n#ARMA\n#GDITPRIORITY\n#CENTCOM/CITS\nWork Requirements\nYears of Experience\n3 + years of related experience\nmay vary based on technical training, certification(s), or degree\nCertification\nCompTIA Security+ CE | CompTIA - CompTIA\nITIL 4 Foundation | PeopleCert - PeopleCert\nRed Hat Certified System Administrator (RHCSA) | Red Hat - Red Hat\nTravel Required\nLess than 10%\nCitizenship\nU.S. Citizenship Required\nSalary and Benefit Information\nThe likely salary range for this position is $98,472 - $133,228. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.\nView information about benefits and our total rewards program.\nOur Identity Verification Process\nAs part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.\nAbout Our Work\nWe are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.\nJoin our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc.\nEqual Opportunity Employer / Individuals with Disabilities / Protected Veterans","datePosted":"2026-08-05T00:13:59.981Z","dateModified":"2026-08-05T00:13:59.981Z","hiringOrganization":{"@type":"Organization","name":"General Dynamics Information Technology","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Tampa","addressRegion":"FL","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"c46e58ecf457b7b9a03e97e5"},"url":"https://jobsearcher.com/jobs/c46e58ecf457b7b9a03e97e5"}}