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Abacus Technology is seeking a Systems Administrator to provide technical support for the US Air Force Office of Special Investigations (AFOSI) in Quantico.  This is a full-time position. Responsibilities * Plan, install, and maintain computer systems, including physical and virtual servers, storage area networks and network attached storage on five enclaves.  
* Install, maintain, and troubleshoot server hardware.
* Troubleshoot Domain Controllers.
* Perform performance monitoring and tuning, upgrades and patching, backup and recovery, as well as troubleshooting and problem resolution.
* Develop and maintain schedules and plans for system updates and patching.  
* Create accounts and groups in Active Directory and create and modify Group Policy Objects. 
* Report on system uptime and SLA performance. 
* Audit server utilization. 
* Assist in building, coordinating, maintaining, changing, and updating, the Risk Management Framework (RMF) Assessment and Authorization (A&A) packages for the five enclaves administered by AFOSI.  
* Ensure that all application deliverables and systems comply with applicable DISA STIGs or Security Requirements Guidance. 
* Identify and report system risks.
*   Qualifications * 3 years experience in systems administration in a Windows based environment. 
* Bachelor’s degree in a related field desired. 
* Must be certified at IAT Level II (e.g., Security+, or other certification satisfying DoD 8570 certification requirements).  Microsoft certification a plus. 
* Strong knowledge of Microsoft Windows technologies, including Active Directory, Windows Administration, scripting, and Windows configuration techniques. 
* Experience with Windows Server 2016, 2019, and 2022; MS SQL Server 2016 and 2019; and VMWare ESXi, vCenter, and vSAN, and Horizon. 
* Experience administering servers in a virtualized production environment using VMWare vSphere 7.x or 8.x technology. 
* Experience with PowerShell for command line and scripting to include scripting for account management, patch deployment, software inventory, service control, and/or object attribute modification. 
* Experience installing, configuring, and maintaining servers with Microsoft Windows. 
* Experience with rack mounted or blade server hardware. 
* Experience with Active Directory to include creating accounts and groups and navigating a domain tree
* Experience creating and modifying Group Policy Objects.
* Experience managing and troubleshooting DNS functions.
* Knowledge of DHCP server functionality. 
* Experience troubleshooting Domain Controllers and familiarity with replication issues.
* Experience with a trouble ticket system such as Remedy or ServiceNow.
* Experience with security as it pertains to server infrastructure, desktops, laptops, servers, firewalls, routers, and intrusion detection systems (IDS). 
* Experience with a backup solution, hands-on experience with backup and restore procedures, and disaster recovery planning.
* Must have experience with RMF and applying STIGs.  
* Working knowledge of IT Systems Maintenance Compliance processes to include information assurance vulnerability management (IAVM). 
* Experience creating, reviewing, and revising security documentation and artifacts.
* Strong understanding of network fundamentals to include TCP/IP and sub-nets desired. 
* Experience with Storage Area Networks desired. 
* Experience with DoD IT environment and networks. 
* Excellent communication skills, both oral and written, analytical skills to troubleshoot issues, and an ability to conceptualize server infrastructures and configurations.  
* Must be a US citizen and hold a current Top Secret clearance with SCI access (TS/SCI).  Applicants selected will be subject to a U.S. government security investigation and must meet eligibility requirements for access to classified information. EOE/M/F/Vet/Disabled