{"id":3938278,"url":"https://alion.io/job/saic-linux-systems-administrator","title":"Linux Systems Administrator","company":{"id":58788,"name":"SAIC","domain":"saic.com","url":"https://alion.io/company/saic","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"B","score":78,"open_postings":93,"ghost_share":0,"stale_share":0.892,"repost_share":0.011,"time_to_fill_p50_days":24,"computed_at":"2026-11-08T05:47:12Z"}},"role":"DevOps","role_family":"DevOps","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Chantilly, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"CIS Benchmarks","optional":false},{"name":"Configuration Management","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"Linux","optional":false},{"name":"Red Hat","optional":false},{"name":"VMWare","optional":false},{"name":"Windows","optional":false},{"name":"Ansible","optional":true},{"name":"Puppet","optional":true},{"name":"Windows Server","optional":true}],"status":"live","first_seen_at":"2026-11-06T23:54:04Z","employer_posted_date":"2026-11-06","last_verified_at":"2026-11-08T15:34:45Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"Join a team that powers critical infrastructure and keeps mission-essential systems running securely, efficiently, and reliably. SAIC is seeking a skilled Linux Systems Administrator who thrives in complex enterprise environments and enjoys solving challenging technical problems across Linux, virtualization, and infrastructure platforms.\nIn this role, you'll be a key member of the systems engineering team, responsible for the health, performance, security, and lifecycle management of our Linux-based infrastructure. You'll work with modern virtualization technologies, support enterprise-scale environments, implement automation, and help drive continuous improvement across our server and infrastructure ecosystem.\nWhat You'll Do:\nAdminister and maintain enterprise Linux environments, with a primary focus on Red Hat Enterprise Linux (RHEL)\nEnsure system availability, performance, and security through proactive monitoring, troubleshooting, patching, and upgrades\nSupport and manage VMware vSphere and VMware Cloud Foundation (VCF) infrastructure\nImplement and maintain security best practices, including CIS and STIG hardening standards\nTroubleshoot and resolve infrastructure, application, operating system, connectivity, and security issues across on-premises environments\nMonitor and optimize system resources including CPU, memory, storage, and overall server performance\nManage local repositories and coordinate operating system patching and lifecycle activities\nCollaborate with infrastructure and systems teams on architecture, deployment, and operational initiatives\nDevelop and enhance automation through scripting and configuration management tools\nSupport Microsoft-based services and technologies, including Active Directory, DNS, DHCP, and related infrastructure components\nContribute to ongoing modernization efforts and continuous improvement across the enterprise technology stack\n Experience providing systems administration support within mixed Microsoft Windows and Red Hat Enterprise Linux (RHEL) environments\nHands-on experience installing, configuring, administering, and troubleshooting Linux operating systems\nExperience monitoring Linux infrastructure health, performance, and availability, and proactively resolving issues\nExperience troubleshooting and resolving application, infrastructure, connectivity, and security issues in on-premises environments\nExperience diagnosing and remediating server performance issues involving CPU, memory, storage, and system resources\nExperience implementing Linux security hardening using CIS Benchmarks and/or STIG requirementsExperience maintaining local repositories and performing system patching, updates, and lifecycle management activities\n\nExperience supporting VMware vSphere and/or VMware Cloud Foundation (VCF) environments\nExperience performing general systems administration and infrastructure support tasks across multiple technology platforms\nExperience collaborating with infrastructure and systems engineering teams to support enterprise environments\nExperience administering Microsoft infrastructure services, including Active Directory, DNS, DHCP, and related network services\nExperience supporting desktop and workstation hardware\nExperience implementing and managing Role-Based Access Control (RBAC) within multi-tenant environments\nExperience developing or maintaining automation through scripting\nAbility to support multiple priorities in a dynamic enterprise IT environment\nPreferred Qualifications:\nRed Hat Certified System Administrator (RHCSA) and/or Red Hat Certified Engineer (RHCE) certification\nExperience with Ansible, Puppet, or similar configuration management and automation tools\nWorking knowledge of Windows 11, Windows Server, VMware vCenter Server Appliance (VCSA), and VMware Cloud Foundation (VCF)\nWorking knowledge of enterprise infrastructure hardware, appliances, and supporting technologies\nExperience performing Windows Server installation, configuration, patching, upgrades, migrations, and ongoing administration\nExperience supporting enterprise virtualization, server infrastructure, and hybrid technology 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