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# System Administrator

- **Company:** ECS Limited
- **Location:** Quantico, VA, United States
- **Experience:** Experienced
- **Salary:** $85,000.0 - $135,000.0
- **Contract:** Permanent contract
- **Skills:** Active Directory, Backup Devices, Software Documentation, CompTIA Security+, Cyber Security, Data Centers, Desktop Virtualization, Monitoring of Systems, Junos, Windows Servers, Public Key Infrastructure, Windows PowerShell, User Provisioning Software, Virtualization Technology, Software Vulnerability Management, Web Applications, Data Logging, Scripting, Firewalls (Computer Science), Infrastructure Automation Frameworks, Information Technology, Nessus, Data Management, Veeam, Splunk, Wsus
- **Published:** October 2, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9210503/system-administrator

## About the Role

* 2+ years of relevant experience systems administration, or a related discipline.
 * Bachelor's degree in IT, Computer Science, Engineering, Cybersecurity, or related field, or equivalent education, certifications, and experience.
 * Working knowledge of Windows Server, Active Directory, Group Policy, virtualization, enterprise storage, backup/recovery, and infrastructure monitoring.
 * Strong cross-platform troubleshooting skills and the ability to independently research, diagnose, and resolve complex technical problems.
 * Working knowledge of cybersecurity hardening principles and secure enterprise environments.
 * U.S. citizenship and ability to obtain and maintain a Secret security clearance.
 * Must possess DoD 8140 certification, (CompTIA Security+ CE) or obtain within 90 days of employment.
 * Ability to work on-site at MCB Quantico., * VMware vSphere, ESXi, and vCenter
 * Cisco enterprise or Nexus switching
 * Juniper SRX/vSRX firewalls and Junos
 * Enterprise SAN/iSCSI storage and Veeam
 * Splunk or comparable centralized logging platforms
 * RADIUS/MFA and PKI/certificate-based authentication
 * DISA STIGs, RMF/ATO, and ACAS/Nessus
 * PowerShell, scripting, or infrastructure automation

## Description

* Support the administration, maintenance, and troubleshooting enterprise network, server, virtualization, storage, firewall, and supporting infrastructure.
 * Support Windows Server and Desktop infrastructure and associated enterprise services.
 * Develop and implement Splunk dashboards.
 * Oversee the nightly backup process including media swaps at the data center.
 * Manage the patch download and deployment for the Microsoft components using WSUS.
 * Provide end user support for USMC web application including troubleshooting issues in a multi-tier web application, user provisioning, and answering general questions.
 * Support infrastructure upgrades, lifecycle planning, cybersecurity requirements, and vulnerability remediation.
 * Maintain and contribute to technical documentation, diagrams, SOPs, and annual system documentation reviews.
 * Other duties as assigned


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