Systems Administrator, Senior | Top Secret clearance w/SCI eligibility

AMERICAN SYSTEMS•Chantilly, VA

6d•$130,000 - $150,000•Onsite

About The Position

AMERICAN SYSTEMS is seeking a motivated, customer-focused Senior Systems Administrator to provide Tier II operational support for a high-visibility customer mission. The role supports the availability, performance, security, and reliability of a complex enterprise IT environment within an Enterprise Operations Center (EOC). It is full-time, onsite, and first shift in Chantilly, Virginia, and is anticipated to relocate to Arlington, Virginia, at a future date. The administrator supports secure enterprise systems and technologies spanning VMware, monitoring and network management platforms, enterprise storage, Microsoft infrastructure services, Windows operating systems, backup and recovery, endpoint protection, and systems-management tools. The role works with customer and technical teams, participates in ITIL service management and approved changes, maintains operational documentation, supports project and engineering work, and provides technical guidance to junior staff. Applicants must hold an active Top Secret clearance with SCI eligibility, meet one of the listed education-and-experience combinations, and hold a current DoD 8140 IAT Level II certification. The position also requires the ability to obtain a DoD 8140 computing-environment certification within six months of hire. The stated salary range is USD $130,000–$150,000 per year; actual compensation depends on factors permitted by law. Benefits include healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance.

Requirements

Active Top Secret clearance with SCI eligibility.
One of the following education and experience combinations: bachelor’s degree and 5+ years of systems support or administration experience; associate’s degree and 7+ years of relevant experience; or 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 six 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.

Responsibilities

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 VMware vCenter, Horizon View, Site Recovery Manager, SolarWinds, Cisco Catalyst Center (DNAC), GEMOne, HP SANs, and enterprise storage platforms.
Administer and support Microsoft Certificate Services, PKI, Active Directory, Group Policy, DNS, DHCP, Windows Server and desktop operating systems, backup and 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 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.