Systems Administrator

About the role

Agil3 Technology Solutions (A3T) 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. A3T is a Northern Virginia based, ISO 9001, ISO 20000-1 & ISO 27001 Certified, Women-Owned (WOSB) and Service-disabled Veteran-Owned (SDVOSB) small business, recognized as a Washington Technology TOP 50 company and featured in various industry publications for rapid growth and cybersecurity excellence.

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,