{"id":4000688,"url":"https://alion.io/job/general-dynamics-information-technology-linux-systems-administrator-2","title":"Linux Systems Administrator","company":{"id":4418,"name":"General Dynamics Information Technology","domain":"gdit.com","url":"https://alion.io/company/gdit","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":95,"open_postings":44,"ghost_share":0,"stale_share":0.182,"repost_share":0.023,"time_to_fill_p50_days":38,"computed_at":"2026-11-09T06:03:00Z"}},"role":"DevOps","role_family":"DevOps","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":110500,"max":149500,"currency":"USD","period":"year","gross":null,"usd_annual":149500},"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache HTTP Server","optional":false},{"name":"CentOS Stream","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"LDAP","optional":false},{"name":"Linux","optional":false},{"name":"Nginx","optional":false},{"name":"Red Hat","optional":false},{"name":"ITIL","optional":true}],"status":"live","first_seen_at":"2026-11-09T00:00:00Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-10T03:20:41Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Type of Requisition:\nRegularClearance Level Must Currently Possess:\nTop SecretClearance Level Must Be Able to Obtain:\nTop Secret/SCIPublic Trust/Other Required:\nNoneJob Family:\nIT Infrastructure and OperationsJob Qualifications:\nSkills:\nIT Troubleshooting, Linux Management, Linux ProgrammingCertifications:\nNoneExperience:\n3 + years of related experienceUS Citizenship Required:\nYesJob Description:\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 WHAT YOU’LL NEED TO SUCCEED\nBring your technology expertise and drive for innovation to GDIT. The Systems Administrator Senior must have:\nCertification: Applicable DoW 8140 or DoW 8570 Certification (CompTIA Security + CE cert)\nExperience: 3+ years of related experience\nRequired skills:Demonstrated 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.\n\nDesired Skills:Red 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.\n\nSecurity clearance level: TS/SCI\nUS citizenship required\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#ARMA\nThe likely salary range for this position is $110,500 - $149,500. 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.Scheduled Weekly Hours:\n40Travel Required:\nLess than 10%Telecommuting Options:\nOnsiteWork Location:\nUSA FL MacDill AFBAdditional Work Locations:\nTotal Rewards at GDIT:\nOur benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.Our 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.About 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.Join our Talent Community to stay up to date on our career opportunities and events atgdit.com/tc.\nEqual Opportunity Employer / Individuals with Disabilities / Protected Veterans","description_format":"text","description_chars":7241,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":true,"languages":[]},"benefits":["401k plan"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["National Security","Digital Government","IT Consulting & Digital Transformation","Systems Integrators"],"lifecycle":[{"event":"open","at":"2026-11-10T03:20:41Z"}],"visa":[{"country":"US","licensed_sponsor":true,"adverts_offering_sponsorship_24m":14,"sanctioned_now":false,"evidence":"H-1B filings in 12 months: 21 · green card filings: 4","filings_12m":21,"filings_prev_12m":30,"green_card_filings_12m":4,"median_offered_wage_usd":154900,"route":null,"cap_exempt":false,"checked_at":"2026-11-09T07:32:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)","Alion: sponsorship offered in the employer's own job adverts (24 months)"],"filings_for_role_12m":13}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":1,"expected_fill_days":37,"reasons":["conf:3","win:early","comp:brand"],"computed_at":"2026-11-10T06:25:24Z"},"pay":{"stated_usd_annual":149500,"is_top_pay":true},"html_url":"https://alion.io/job/general-dynamics-information-technology-linux-systems-administrator-2","json_url":"https://alion.io/job/general-dynamics-information-technology-linux-systems-administrator-2.json","meta":{"generated_at":"2026-11-10T06:25:24Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":14949,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-11T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4418},"rest":"https://alion.io/mcp/rest/get_company?id=4418"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fgeneral-dynamics-information-technology-linux-systems-administrator-2"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fgeneral-dynamics-information-technology-linux-systems-administrator-2"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fgeneral-dynamics-information-technology-linux-systems-administrator-2"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/general-dynamics-information-technology-linux-systems-administrator-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fgeneral-dynamics-information-technology-linux-systems-administrator-2"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":4000688}},{"tool":"search_jobs","arguments":{"company":"gdit.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":4000688},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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