Senior Systems Administrator (Linux)

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United States

United States

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divh2Senior Linux System Administrator/h2pAmentum is seeking a highly experienced Senior Linux System Administrator to oversee and manage enterprise-level Linux infrastructure in support of U.S. Navy operations within a Department of Defense (DoD) environment. This role requires deep technical expertise in Linux systems, leadership in secure system administration, and a strong working knowledge of Risk Management Framework (RMF) and NIST SP 800-53 controls. The ideal candidate will demonstrate the ability to lead teams, manage complex environments, and ensure cybersecurity compliance across classified and unclassified networks./ppResponsibilities:/pulliAdminister and maintain Red Hat Linux (RHEL) and other Linux-based environments in classified and unclassified environments across Navy networks./liliImplement and maintain RMF security controls and ensure systems are compliant with DISA STIGs and DoD cybersecurity policies./liliApply and manage patches and updates across all Linux systems in accordance with DoD and Navy patch management policies./liliManage automated installation methods and system imaging (e.g., SCCM, VMware, Nutanix, Satellite, Ansible)/liliPerform system hardening, patching, and vulnerability remediation using tools such as ACAS, ESS, and SCAP./liliDevelop and maintain PowerShell scripts for automation of administrative tasks and system configuration./liliSupport virtualization platforms (VMware, Hyper-V) and manage virtual infrastructure lifecycle./liliCollaborate with cybersecurity teams to support ATO packages, POAMs, and audit readiness./liliMaintain system documentation, configuration baselines, and standard operating procedures (SOPs)./liliProvide mentorship to junior administrators and IT support staff./liliParticipate in Change Control Boards (CCBs) and Configuration Management Boards (CMBs)./liliAssist with incident response, forensic analysis, and system recovery efforts./liliSupport backup and disaster recovery strategies using enterprise tools (e.g., Veeam, Commvault)./liliEvaluate and recommend new Linux technologies and DoD-approved tools to improve system performance and security./liliPerform other duties as assigned./li/ulpPhysical Elements: Lifting: 25 - 50lbs Positions: Walking/Standing; Crawling/Kneeling; Stooping; Sitting; Frequent climbing Pushing/Pulling: 25 - 50lbs Environmental: Customer Contact; Extended Work Day; Confined Work Area; Office Laboratory; Field Assignment; Inclement Weather/ppMinimum Qualifications:/pulliAdvance knowledge and certification in both Windows Server and RHEL is considered highly desired/liliProficiency in automation tools and scripting (e.g., PowerShell, Bash, Python)/liliVMware/Nutanix certification/liliKnowledge/Administration of Trellix, LogRhythm, and MDE/liliExperience with DoD systems and infrastructure/li/ululliKnowledge of Cyber Security Methods and Techniques/liliKnowledge of DoD IT systems, to include Windows, RHEL, and comprehensive infrastructure concepts/li/ululliBachelors degree and 7+ years of System Administration/IT experience/li/ululliHS Diploma and 12 years of System Administration/IT experience/li/ulpRequired Training, Licenses and Certifications:/pulliDoD 8570/8140 IAT II/liliOne of the following OS Certifications required/liulliLinux/liulliLinux+/liliRed Hat Certified System Administrator (RHCSA)/li/ul/ul/ulpSecurity Clearance: Top Secret security clearance is required with T5 or equivalent (SSBI) investigation level. Applicants selected must be a US Citizen to apply for a Secret Security Clearance. Applicants selected either must currently possess a Secret clearance or will be subject to a government security investigation and must meet eligibility requirements to obtain clearance prior to commencement of employment and maintain a security clearance for access to classified information or Closed/Restricted Areas throughout duration of employment./ppCompensation: The annual starting salary for the position is between $105K - $145K. Factors which may affect starting pay within this range may include geography/market, skills, education, experience and other qualifications of the successful candidate./ppBenefits: Amentum offers the following benefits for this position, subject to applicable eligibility requirements: medical, dental and vision insurance, 401(k) retirement plan, life insurance, long term and short term disability insurance, 15 days of paid time off, and parental leave. This position includes a competitive benefits package./p/div

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