Systems Administrator

** Systems Administrator
**** Full Time | Various Locations | Secret Clearance Required
**** Location(s):
Quantico, VA / Camp Lejeune, NC / Camp Pendleton, CA / 29 Palms, CA / Hawaii / Okinawa, Japan
** Steel Gate is seeking an experienced Systems Administrator to provide enterprise systems administration and operational support for the Government IT environment.  The Systems Administrator will be responsible for the day-to-day installation, configuration, administration, monitoring, maintenance, troubleshooting, and sustainment of servers, operating systems, virtual infrastructure, enterprise applications, and associated IT services. The customer environment includes on-premises infrastructure, Microsoft 365, Microsoft Azure IL2 cloud services, virtualized systems, data centers, networks, applications, and end-user services.  

The position will work closely with Systems Engineers, Network Engineers, Cloud Engineers, Cybersecurity personnel, and Technical Support staff to maintain reliable, secure, and mission-ready IT services.  

Key Responsibilities  
• Install, configure, administer, maintain, monitor, and troubleshoot physical and virtual servers, operating systems, applications, and associated enterprise services.  
• Monitor and troubleshoot network-dependent services such as DNS, DHCP, NTP, SNMP, HTTP/HTTPS, SSH, LDAP/LDAPS, and SMTP.  
• Administer Microsoft Windows Server environments and associated infrastructure services.  
• Support Active Directory, Group Policy, user and computer objects, authentication, permissions, and access-control functions.  
• Support Microsoft 365 services and associated enterprise applications.  
• Administer and support Microsoft Configuration Manager and related endpoint/system-management capabilities.  
• Support VMware and virtual desktop infrastructure, including physical and virtual computing environments.  
• Perform routine system monitoring and analyze availability, capacity, performance, security, and operational health.  
• Troubleshoot hardware, operating system, application, authentication, connectivity, and configuration problems.  
• Perform server, operating system, application, and service updates and assist with patching activities required by applicable cybersecurity directives.  
• Support vulnerability remediation and system hardening activities in coordination with Cybersecurity personnel.  
• Maintain system configurations and ensure changes are implemented and documented in accordance with established configuration- and change-management processes.  
• Support system backup, restoration, continuity, and recovery activities.  
• Perform routine preventive maintenance and system-health checks.  
• Support installation, configuration, testing, upgrade, and deployment of new hardware and software.  
• Assist with technology-refresh activities and replacement of End-of-Life (EOL) and End-of-Support (EOS) systems.  
• Develop and maintain Standard Operating Procedures (SOPs), technical procedures, system documentation, configuration records, and troubleshooting guides.  
• Prepare After Action Reports and technical documentation following significant outages, maintenance events, upgrades, or system changes when required.  
• Create, update, resolve, and document incidents and service requests using the Government-approved ticket-management system.  
• Coordinate with Technical Support personnel to resolve issues escalated beyond desktop/help-desk support.  
• Escalate complex engineering problems to the Senior Systems Engineer or appropriate Network, Cloud, or Cybersecurity Engineer.  
• Coordinate with Government and contractor technical personnel to diagnose and restore interrupted IT services.  
• Assist with inventory, asset accountability, and…