Windows Server Administrator

MANTECH; Quantico (VA); On-site; USD 85,000 - 110,000; Full time

Job summary

MANTECH seeks a Windows Server Administrator in Quantico, VA to support enterprise servers and security compliance. The role focuses on installing, configuring, and maintaining Windows Server ecosystems across 2016, 2019, and 2022, with AD DS, DNS, DHCP, and GPO management in a highly controlled environment.

The ideal candidate will have hands-on experience with virtualization (VMware or Hyper-V), MECM/SCCM for patching, WSUS, and a strong emphasis on DISA STIGs, ACAS/Nessus, and DR/COOP

Qualifications

• Bachelor’s degree and at least 2 years in Information Systems Security; total 8 years of experience if no degree.
• Experience navigating sponsor accreditation process and ICD 503 BOE creation.
• Proven experience meeting security requirements in sponsor environment.
• Experience collaborating across large teams to drive security initiatives.
• Experience with network inventorying and documentation (compliance, configuration management, patching).
• Strong ability to create and maintain technical, network, and security documentation.

Responsibilities

• Installing, configuring, and maintaining Windows Server OS (2016, 2019, 2022) while monitoring performance.
• Managing AD DS: domain controllers, user/group management, DNS, DHCP, and GPOs.
• Administering virtualized servers with VMware vSphere/ESXi or Hyper-V.
• Planning and executing automated patching and OS deployments using MECM/SCCM and WSUS.
• Hardening Windows servers per DISA STIGs and remediating with ACAS/Nessus.
• Maintaining enterprise backups and participating in DR/COOP testing.

Skills

Windows Server

Active Directory

Group Policy

Security Compliance

DISA STIGs

ACAS/Nessus

MECM/SCCM

VMware vSphere/ESXi

Hyper-V

Documentation

Disaster Recovery

Education

Bachelor’s degree

Tools

VMware vSphere/ESXi

Microsoft Hyper-V

MECM/SCCM

WSUS

Nessus

ACAS

DISA STIGs

Job description

MANTECH seeks a motivated, career and customer-oriented WINDOWS SERVER ADMINISTRATOR to join our team in QUANTICO, VA.

Responsibilities include but are not limited to:

• Installing, configuring, and maintaining Windows Server operating systems (2016, 2019, 2022) while monitoring server performance and optimizing resource utilization.
• Managing Microsoft Active Directory Domain Services (AD DS), including domain controllers, user/group management, DNS, DHCP, and complex Group Policy Object (GPO) creation and deployment.
• Administering virtualized server environments utilizing VMware vSphere/ESXi or Microsoft Hyper‑V to ensure scalable and resilient infrastructure.
• Planning and executing automated patching, software updates, and OS deployments using Microsoft Endpoint Configuration Manager (MECM/SCCM) and Windows Server Update Services (WSUS).
• Hardening Windows servers in strict accordance with Defense Information Systems Agency (DISA) Security Technical Implementation Guides (STIGs) and remediating vulnerabilities identified by ACAS/Nessus scans.
• Maintaining enterprise backup solutions, ensuring data integrity, and participating in Disaster Recovery (DR) and Continuity of Operations (COOP) planning and testing.

Minimum Qualifications:

• Bachelor’s degree and at least 2 years in Information Systems Security. A total of 8 years’ experience required without a degree.
• Demonstrated experience navigating the Sponsor's accreditation process and ICD 503 standards, including A&A Body of Evidence (BOE) creation.
• Proven experience meeting security requirements in the Sponsor's environment or similar enterprise environments.
• Experience collaborating across large teams to drive security initiatives and manage complex, integrated system data flows.
• Experience with complex network inventorying and network documentation (compliance, configuration management, patching, centralized authentication).
• Strong capability to create, maintain, and communicate technical, network, and security documentation.

Preferred Qualifications:

• Certified Information Systems Security Professional (CISSP) certification.
• Experience with the Sponsor’s primary cyber risk and compliance automation tools.
• Proactive self-starter with excellent interpersonal skills, capable of working across teams and driving organizational change.

Clearance Requirements:

• Must have an active current TS/SCI security clearance

Physical Requirements:

• Must be able and willing to perform occasional manual labor and warehouse duties, with the ability to lift up to 50 pounds.
• Must be able to remain in a stationary position 50% of the time.