ManTech seeks a GNOC Systems Administrator to help support our current Marine Corps Systems Command, Program Manager Intelligence & Cyber Operations Contract in Stafford, VA.Responsibilities include but are not limited to:Maintain a 24/7 presence to manage an entire domain with over 40 garrison and tactical sites.Work will be in shifts to include nights, weekends, and up to 12-hour workdays with a changing/rotating schedule.Assist in administering and maintaining Windows servers, Windows workstations, virtual machines, and other critical systems in an enterprise environment.Able to use System Center Operations Manager (SCOM) and Service Manager Console to monitor enterprise services and generate tracking tickets as needed.  Provide user support for all enterprise services.Diagnose and resolve technical hardware and software issues by conducting basic and tier II troubleshooting for servers, workstations, and applications within the active directory environment providing first call resolution to incident reports and requests for service.Open an incident response ticket for all incidents and open a service ticket for all service requests.  Monitor all tickets from creation to resolution to closure.Assist and support with account creations, resetting passwords, troubleshooting system and network problems, installation of hardware and workstations, unlocking accounts, and transferring data.Minimum Qualifications:At least 3 years of related Systems Administration experienceMeet DoD 8570 IAT Level II requirementsWorking knowledge of SCOM, ServiceNow, and Active directory (user account creation, password resetting, Kerberos setup, PKI setup).Set-up, configuration, and support of internal and external networks.Developing and maintaining disaster recovery solutions and documentation.Working knowledge of PowerShell scripting using any/all the respective plugins related to the applicable technologies.Working knowledge of DoD STIGs related to the applicable technologies and how to implement, mitigate, and write POA&M statements.Preferred Qualifications:Bachelor’s DegreeKnowledge of standard DoD and Marine Corps concepts, practices, and procedures.  Familiarity with Navy/Marine Corps interoperability requirements is preferred.Active Directory, Group Policy, Linux OS, Networks, MS Exchange, MS Lync, SCCM, ServiceManager, MS Hyper-V, MS SQL Server, Networked Printers/Services, Distributed File Services, Data Protection Manager, SMB, JavaScript, SharePoint.Clearance Required:Must have an Active TS/SCIPhysical Requirement: Sedentary Work