Windows System Adminitrator
Closure Technologies
| Company | Closure Technologies |
| Category | Engineering |
| Location | Chantilly |
| Remote | On-site (inferred) |
| Employment | Not stated |
| Level | Not stated |
| Salary | Not stated by the employer |
| Posted | 21 May 2026 |
| Last verified | 30 Jul 2026 |
| Source | Employer career page (greenhouse) |
Description
Closure Technologies is seeking a Windows System Administrator in Chantilly, VA who will leverage their development skills and experience to support the successful ingestion, cleansing, transformation, loading, and display of significant amounts of data.
Clearance Requirement: TS/SCI with Polygraph
Key Responsibilities:
Sustain and improve the organization’s Windows infrastructure as part of a collaborative systems team. This 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
Required Qualifications:
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 PowerShell, VB, or similar tools
Experience and ability to manage environments running Windows Server 2008/2012/2016
Experience with Microsoft System Center Operations Manager (SCOM) and Access Control Service (ACS)
Experience with Microsoft Exchange, Outlook, and antivirus solutions including Symantec and McAfee
Preferred Qualifications:
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
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