**Description** The Leidos National Security Sector has an immediate opening for aSr. Systems Administratorat the Pentagon. The Sr. Systems Administratorwill support the G2 Army MI Enterprise / SENTINEL program which provides IT repair, maintenance, operations, logistics, and engineering services to help ensure secure, reliable, and uninterrupted availability of Army Military Intelligence Enterprise IT Systems. The successful candidate will perform all Systems Administrator duties providing direct support to DAMI-IM enterprise networked systems and managing Microsoft server infrastructure solutions across multiple solution areas in a DoD enterprise environment. **Primary Responsibilities:** + Administer Active Directory services, member servers and storage, integrate new technologies into new and existing systems, including the transition and migration of enterprise systems. + Determine isolation and resolution of complex hardware and software problems involving the application, the operating system, the hardware, the communications infrastructure, and/or any combination thereof. + Lead, manage, and execute projects approved by the Government and documented in the ticketing system. + Perform systems administration of desktop and server systems connected to local and wide area networks. + Desktop system management responsibilities involving account monitoring, security, Operating System installation, and other local area system administration related functions. + Ensure the transition and migration of networks and development of network addressing schemes and administration of Microsoft domains. + Perform a variety of analytical tasks which are broad in nature and are concerned with design and implementation including personnel, hardware, software, and support facilities and/or equipment.Plan and perform engineering research, design development, and other assignments in conformance with design, engineering, and customer specifications. + Provide input to in-progress reviews on IT projects and maintain effective communications with government and other site leadership. **Basic Qualifications:** + Bachelor's degree with 8+ years of experience or a Master’s degree with 6+ years of experience. Additional years of relevant experience may be substituted in lieu of a degree. + ActiveDoD TS/SCI security clearance. + Currently possess DoD 8570 (8140) certification at IAT II, CompTIA Security+ CE or higher. + Currently possess Microsoft Azure or 365 or related certification or the ability to obtain the certification after hire. + Advanced at designing, evaluating, maintaining and troubleshooting Windows Server 2019 using the most current technologies. + Ability to upgrade Windows Server from Windows Server 2019 to Server 2022 and skills needed to confidently plan, deliver, operate, and manage Microsoft server infrastructure solutions across multiple solution areas in a DoD enterprise environment. + Expert knowledge of operational support activities with the ability to administer Windows Server and desktop Infrastructure. + Experienced in the use of Microsoft terminal services and system recovery tools. **Preferred Qualifications:** + Knowledge of the following systems and tools: ACAS, Azure, DHCP, DNS, HBSS, Hyper-V, Microsoft 365, SCCM, SharePoint, SQL, SMTP and VMware. Understanding of help desk ticketing tools (Microsoft System Center and ServiceNow). + Advanced knowledge of PowerShell and the ability to write custom scripts for various purposes. + Understanding of Army enterprise environment. + Experienced with patching and system upgrades that occurs in a classified environment. + Customer oriented with excellent oral and written communications skills. EIO2024 **Original Posting Date:** 2024-12-10 While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. **Pay Range:** Pay Range $89,700.00 - $162,150.00 The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. REQNUMBER: R-00149567 All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.