Windows Systems Administrator
Listed on 2026-01-09
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IT/Tech
Cybersecurity, Systems Engineer, Systems Administrator, IT Support
MANTECH seeks a skilled and motivated Windows Systems Administrator to join our team of top Information Technology and Analytic professionals in Chantilly, VA.
You will play a vital role in maintaining and enhancing the Sponsor’s Windows environment, contributing to national security through technical excellence. This dynamic role is embedded in an innovative Big Data ecosystem where collaboration and growth are encouraged.
ResponsibilitiesYou will help sustain and improve the organization’s Windows infrastructure as part of a collaborative systems team. Your focus will span operations, security, and integration of hardware and software.
Research and resolve operating system problems efficiently and accurately in adherence to organizational standards
Troubleshoot operating system issues and collaborate with cross-functional teams including application development and networking
Build and harden Windows servers, establish and manage configuration baselines
Plan, test, install, integrate, and maintain new or updated operating systems
Apply security and firmware patches promptly; assist in maintaining patch management strategies
Test and integrate new hardware and software components
Manage the lifecycle of operating systems
Design interfaces to external systems and maintain thorough documentation on system configurations and processes
High School Diploma and 7+ years of relevant experience with Windows systems
Experience with complex system architectures and interconnected data environments
Hands-on experience with Active Directory, LDAP, and Centrify for domain management
Experience and proficiency applying security patches within enterprise systems
Experience scripting in Power Shell, VB, or similar tools
Experience and ability to manage environments running Windows Server 2008/2012/6
Experience with Microsoft System Center Operations Manager (SCOM) and Access Control Service (ACS)
Experience with Microsoft Exchange, Outlook, and antivirus solutions including Symantec and Mc Afee
Familiarity with LAN, SAN, TCP/IP, and Cisco network configurations
MCSE or MCITP certifications
Experience with VMware 5+ and a VMWare Certified Professional (VCP) credential
- An active/current TS/SCI with Polygraph is required.
The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
Must be able to use hands to operate a computer and other office productivity machinery such as a calculator, copy machine, and computer printer.
MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with MANTECH, please email us at and provide your name and contact information.
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