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Sr Systems Administrator with Security Clearance

Aqua ITGaithersburg, MD🇺🇸United StatesPosted 20 Aug 2026

Why This Role Stands Out

Advance your career as a Sr. Systems Administrator in a hybrid environment, taking on critical responsibilities in secure, mission-critical settings and driving system modernization initiatives. This role is ideal for skilled professionals with a TS/SCI clearance and experience in Linux, Windows, virtualization, and cloud platforms, offering significant growth and impact. Embrace this opportunity to contribute to a vital program and expand your expertise.

Quick Overview

Seniority
Mid Senior
Employment type
Employee
Work mode
Hybrid
Location
Gaithersburg, MD, United States
Posted
6 days ago
PythonPowerShellBashAWSAzureDockerAnsibleVMwareJenkinsGitActive DirectoryPKIDNS

Job Description

Responsibilities: Lead system administration for Linux and Windows-based systems in secure, mission-critical environments. Diagnose and resolve hardware, software, and end-user technical issues while serving as a primary IT support contact, managing support tickets through resolution, and delivering responsive customer service. Architect and manage complex server, storage, and virtualization infrastructure (VMware, KVM). Perform OS installation, configuration, hardening, and patching in compliance with DoD STIGs and agency policies.

Monitor and tune system performance, conduct root cause analysis, and resolve complex issues quickly and efficiently. Support backup/recovery strategies, disaster recovery plans, and continuity of operations. Oversee and maintain automation scripts and infrastructure as code (Ansible, PowerShell, Bash, etc.). Maintain system documentation, configuration baselines, and support CM and RM activities. Lead and support deployment of system enhancements and modernization initiatives for Chinook program.

Collaborate with cybersecurity, network engineering, and software development teams to ensure system compliance and performance. Participate in security audits, incident response, and operational readiness activities.

Basic Qualifications: US citizenship is required per contract with an ACTIVE TS/SCI clearance. Bachelor’s degree in Computer Science, Engineering, Information Technology, or related discipline and 8-12 years of prior relevant experience or Master’s with 6-10 years of prior relevant experience. DoD 8570 IAT Level II or III certification (e.g., Security+ CE, CASP+, CISSP). Experience with cloud platforms (AWS GovCloud, Azure Government) and hybrid cloud environments. Experience with Linux (Red Hat Enterprise Linux or CentOS) and Windows Server platform system administration.

Proficiency with virtualization platforms (VMware, KVM) and management tools. Experience with automation and scripting (Ansible, Bash, PowerShell, Python). Familiarity with STIG compliance, system hardening, ACAS scans, and RMF processes. Strong understanding of enterprise networking, identity/access management, and storage concepts. Proven ability to troubleshoot, document, and lead systems-related projects independently. Experience supporting IC or DoD classified environments.

Preferred Qualifications: Experience supporting our customer or GEOINT missions.
Familiarity with DevOps tools and pipelines (Git, Jenkins, Docker, etc.).
Knowledge of enterprise backup solutions, DNS, DHCP, Active Directory, and PKI.

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