Senior Windows Systems Administrator Security Clearance

Role Overview

Clearance Requirement:
DoD Secret

Location:

On‑site at Aberdeen Proving Ground, MD

We are seeking a highly skilled Senior Windows Systems Administrator to support a critical government IT services contract. The successful candidate will act as a primary subject matter expert for Windows infrastructure, automation, virtualization, and high‑availability systems. This role requires deep technical expertise in Microsoft Windows Server, enterprise production environments, network storage, and virtualization technologies. As a senior member of the team, the candidate will also provide technical guidance, leadership, and mentorship to other IT professionals.

• Install, configure, and manage Microsoft server operating systems, with a heavy emphasis on Windows Server operating systems, Active Directory (AD) configuration, Group Policy (GPO) management, and associated middleware.
• Manage a VMware environment, including systems deployment, patching, STIG/hardening, and troubleshooting.
• Act as a senior technical resource, providing mentorship, guidance, or team lead support to junior administrators and technical staff; may lead 5 or more employees.
• Configure, maintain, and utilize the Elastic Stack (ELK) to ingest, analyze, and visualize system logs and performance metrics across the enterprise to proactively identify system anomalies and security events.
• Manage complex production environments using automated installation, automated build and deployment, and automated configuration management frameworks.
• Write and utilize operating system commands and scripts to automate routine tasks, utilizing Power Shell and being familiar with others like Python or Bash.
• Build, maintain, and support clustered, scalable, and high‑availability systems, including load balancing, web servers, application servers, and server virtualization.
• Apply foundational networking principles (TCP/IP, firewalls, routing, VLANs) to perform general network troubleshooting and resolve complex system issues.
• Utilize enterprise monitoring tools for event and performance monitoring. Conduct performance tuning, capacity planning, and bottleneck resolution.
• Apply Defense Information Systems Agency (DISA) Security Technical Implementation Guides (STIGs) to harden systems, remediate advanced security vulnerabilities, manage identity and access configurations, and ensure overall system security compliance. Experience with ESS (e.g., McAfee/Trellix) is required.
• Plan and execute seamless operating system upgrades and environment migrations with minimal mission impact.
• Support enterprise hardware and storage environments, including CISCO Unified Computing System (UCS) and technologies such as Commvault, Net App, or VSAN.

• Experience utilizing the Assured Compliance Assessment Solution (ACAS) for vulnerability scanning, analysis, and compliance reporting.
• Familiarity or experience with Linux server operating systems (e.g., RHEL), event and performance monitoring, and associated middleware.
• Knowledge of database technologies, including installation and configuration of database management systems and migration of databases.

• High School Diploma / GED:
  Minimum of 11 years of directly related IT experience.
• Associate's degree:
  Minimum of 9 years of directly related IT experience.
• Bachelor's Degree:
  Minimum of 7 years of directly related IT experience.
• Master's Degree:
  Minimum of 5 years of directly related IT experience.

• DoD Directive 8570.01 Compliance:
  Must possess a current Security+ certification (or equivalent IAT Level II baseline certification).
• Computing Environment (CE):
  Must hold at least one current Computing Environment certification, or be able to obtain one within 6 months of start. Given the technical requirements of this role, a Microsoft-based certification (e.g., Microsoft Certified: Windows Server Hybrid Administrator Associate, MCSE) is strongly preferred.

Full-time

$90,000 - $135,000 per year

• 401(k)
• 401(k) matching
• Employee assistance program
• Flexible spending account
• Health insurance
• Life insurance
• Paid time off
• Parental leave
• Referral program
• Vision insurance

In person