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# Systems Administrator, Senior | Top Secret clearance w/SCI eligi

- **Company:** AMERICAN SYSTEMS
- **Location:** Chantilly, VA, United States
- **Experience:** Expert
- **Salary:** $130,000.0
- **Contract:** Permanent contract
- **Skills:** Multitier Architecture, Microsoft Windows, Active Directory, Antivirus Softwares, Systems Engineering, Backup Devices, Cyber Security, Dynamic Host Configuration Protocol, Disaster Recovery, Domain Name System (DNS), Windows Servers, Public Key Infrastructure, TCP/IP, VMware VSphere, Computer Networking Systems, System Availability, SolarWinds (Software), Data Management, Hardware Infrastructure, Cisco Switches, Cisco, Vmware
- **Published:** October 23, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9261434/systems-administrator-senior-top-secret-clearance-wsci-eligi

## About the Role

* Active Top Secret clearance with SCI eligibility.
 * One of the following combinations of education and experience:
 + Bachelor's degree and 5+ years of systems support or administration experience
 + Associate's degree and 7+ years of relevant experience
 + High school diploma and 11+ years of relevant experience
 * Current DoD 8140 IAT Level II certification, such as Security+ CE.
 * Ability to obtain a DoD 8140 computing-environment certification within 6 months of hire, such as MCSA, VCP, or equivalent.
 * Experience supporting Microsoft Windows environments, including Windows Server 2008-2022, Windows 10/11, Exchange, Active Directory, DNS, Group Policy, PKI, workstation/server hardware, backup, antivirus, DHCP, and TCP/IP.
 * Working knowledge of VMware and Cisco systems, including vSphere or Horizon View, Cisco networking devices, and TACLANE encryption devices

Pay Transparency Statement

## Description

AMERICAN SYSTEMS, a 100% employee-owned federal government contractor, is seeking a motivated, customer-focused Senior Systems Administrator to provide Tier II operational support for a high-visibility customer mission.

In this full-time, onsite first-shift role, you will help maintain the availability, performance, security, and reliability of a complex enterprise IT environment within an Enterprise Operations Center (EOC) in Chantilly, VA.*, As a Senior Systems Administrator with AMERICAN SYSTEMS, you will:

 * Provide Tier II systems administration and operational support for a secure enterprise environment.
 * Monitor, troubleshoot, and resolve system availability, performance, security, and configuration issues.
 * Administer and support key technologies, including:
 + VMware vCenter, Horizon View, and Site Recovery Manager
 + SolarWinds, Cisco Catalyst Center (DNAC), and GEMOne
 + HP SANs and enterprise storage platforms
 + MS Certificate Services, PKI, Active Directory, Group Policy, DNS, and DHCP
 + MS Windows Server and desktop operating systems
 + Backup, recovery, endpoint protection, and systems-management tools
 * Maintain the health, performance, and availability of multi-user systems.
 * Partner with network, cybersecurity, engineering, service desk, and customer teams to resolve operational issues.
 * Analyze requirements and support the integration, configuration, and sustainment of supported platforms.
 * Participate in ITIL service management, including incident, problem, and change management activities.
 * Prepare, document, and execute approved change requests.
 * Develop and maintain Standard Operating Procedures (SOPs), knowledge articles, and technical documentation.
 * Support project and engineering teams with testing, packaging, release preparation, and production integration.
 * Apply applicable security requirements, hardening guidance, and operational best practices.
 * Provide technical guidance to junior Systems Administrators and Systems Engineers.
 * Participate in shift turnover and document incidents, actions taken, and outstanding risks.