Senior Systems Administrator IV

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Before you apply

Salary$90k – $135k

LocationAberdeen, MD, Aberdeen, United States

Work modeon-site

Typefull-time

SenioritySenior

Experience5+ yrs

DepartmentInformation Technology

Company size9+ people

PostedSep 24, 2026 · 1mo ago

Verified live3d ago

At a glanceSummarised by Seekless from the posting.

7+ years of directly related IT experience with a Bachelor's degree

Deep technical expertise in Microsoft Windows Server, enterprise production environments, network storage, and virtualization technologies

Experience with Windows Systems Administration: Install, configure, and manage Microsoft server operating systems, Active Directory, Group Policy

Experience with VMware environment management

Ability to configure, maintain, and utilize Elastic Stack (ELK)

Scripting proficiency in PowerShell and familiarity with Python or Bash

Experience with high-availability infrastructure (load balancing, web servers, application servers, server virtualization)

Foundational networking principles (TCP/IP, firewalls, routing, VLANs)

Experience with enterprise monitoring tools for event and performance monitoring

Experience applying DISA STIGs to harden systems and ensure security compliance

Experience with ESS (e.g., McAfee/Trellix)

Experience with system lifecycle management (OS upgrades, environment migrations)

Support enterprise hardware and storage environments (CISCO UCS, Commvault, NetApp, VSAN)

Mentorship and leadership of 5+ employees

Must possess a current Security+ certification (or equivalent IAT Level II baseline certification)

High School Diploma / GED with minimum 11 years of directly related IT experience

Associate's degree with minimum 9 years of directly related IT experience

Bachelor's degree with minimum 7 years of directly related IT experience

Master's degree with minimum 5 years of directly related IT experience

Experience with ACAS for vulnerability scanning

Familiarity with Linux server operating systems (e.g., RHEL)

Knowledge of database technologies (installation, configuration, migration)

Microsoft-based certification (e.g., Microsoft Certified: Windows Server Hybrid Administrator Associate, MCSE) is strongly preferred

Skills

Windows Server

Active Directory

Group Policy

VMware

Elastic Stack (ELK)

PowerShell

Python

Bash

DISA STIGs

McAfee/Trellix

CISCO UCS

Commvault

NetApp

VSAN

ACAS

RHEL

Benefits

401(k)

401(k) matching

Dental insurance

Employee assistance program

Employee discount

Flexible schedule

Flexible spending account

Health insurance

Life insurance

Paid time off

Parental leave

Professional development assistance

Referral program

Tuition reimbursement

Vision insurance

About the role

Senior Windows Systems Administrator

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Position: Systems Administrator IV

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Supported Program: U.S. Army Test & Evaluation Command

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Clearance Requirement: DoD Secret

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Location: On-site at Aberdeen Proving Ground, MD

Role Overview

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.

Responsibilities

Core Responsibilities & Technical Qualifications

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Windows Systems Administration: 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.

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Virtualization Management: Manage a VMware environment, including systems deployment, patching, STIG/hardening, and troubleshooting.

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Technical Mentorship: 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.

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Centralized Logging & Analytics (Elastic Stack): 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.

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Automation & Deployment: Manage complex production environments using automated installation, automated build and deployment, and automated configuration management frameworks.

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Scripting Proficiency: Write and utilize operating system commands and scripts to automate routine tasks, utilizing PowerShell and being familiar with others like Python or Bash.

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High-Availability Infrastructure: Build, maintain, and support clustered, scalable, and high-availability systems, including load balancing, web servers, application servers, and server virtualization.

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Networking & Troubleshooting: Apply foundational networking principles (TCP/IP, firewalls, routing, VLANs) to perform general network troubleshooting and resolve complex system issues.

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Performance Monitoring & Optimization: Utilize enterprise monitoring tools for event and performance monitoring. Conduct performance tuning, capacity planning, and bottleneck resolution.

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Security & Compliance: 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.

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System Lifecycle Management: Plan and execute seamless operating system upgrades and environment migrations with minimal mission impact.

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Hardware and Storage: Support enterprise hardware and storage environments, including CISCO Unified Computing System (UCS) and technologies such as Commvault, NetApp, or VSAN.

Nice to have

Preferred Qualifications

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Vulnerability Scanning (ACAS): Experience utilizing the Assured Compliance Assessment Solution (ACAS) for vulnerability scanning, analysis, and compliance reporting.

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Linux Administration: Familiarity or experience with Linux server operating systems (e.g., RHEL), event and performance monitoring, and associated middleware.

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Database Technologies: Knowledge of database technologies, including installation and configuration of database management systems and migration of databases.

Requirements

Education and Experience Requirements

Candidates must meet one of the following education and experience combinations. Education must be in a directly related IT discipline (e.g., Computer Science, Information Systems, Computer/Software Engineering, Management Information Systems, or Computer Forensics/Security).

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High School Diploma / GED: Minimum of 11 years of directly related IT experience.

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Associate’s degree: Minimum of 9 years of directly related IT experience.

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Bachelor’s Degree: Minimum of 7 years of directly related IT experience.

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Master’s Degree: Minimum of 5 years of directly related IT experience.

Certifications

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DoD Directive 8570.01 Compliance: Must possess a current Security+ certification (or equivalent IAT Level II baseline certification).

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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.