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Windows System Administrator - TS​/SCI Poly clearance required

Job in McLean, Fairfax County, Virginia, USA
Listing for: V2X
Full Time position
Listed on 2026-01-12
Job specializations:
  • IT/Tech
    Systems Engineer, Cybersecurity
Salary/Wage Range or Industry Benchmark: 125000 - 150000 USD Yearly USD 125000.00 150000.00 YEAR
Job Description & How to Apply Below
Position: Windows System Administrator - active TS/SCI with Poly clearance required

Description

As part of a collaborative systems team, the successful candidate will Sustain and improve the organization’s Windows infrastructure
. Your focus will span operations, security, and integration of hardware and software.

Responsibilities
  • 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.
Experience
  • 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 2008/2012/2016.
  • 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.
Employee benefits include the following
  • Healthcare coverage
  • Life insurance, AD&D, and disability benefits
  • Retirement plan
  • Wellness programs
  • Paid time off, including holidays and leave of absences
  • Eligible Tuition Reimbursement
  • Learning and Development resources
  • Employee assistance resources
Pay and benefits are subject to change at any time and may be modified at the discretion of the company, consistent with the terms of any applicable compensation or benefit plans.

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities.

This employer is required to notify all applicants of their rights pursuant to federal employment laws.

For further information, please review the Know Your Rights (https://(Use the "Apply for this Job" box below).) notice from the Department of Labor.

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