Onsite Systems Administrator for Mission-Critical IT (Secret)

SAIC; San Diego (CA); On-site; USD 80,000 - 120,000; Full time

Job summary

SAIC is seeking an onsite Systems Administrator in San Diego, CA to support the JEXC2 program across enterprise, tactical, and deployable IT environments. The role requires hands-on administration, troubleshooting, and operational support for mission-critical operations in a diverse IT stack.

The candidate will manage Windows and Linux systems, AD/GP, Exchange, virtualization (VMware ESXi/vSphere, Horizon), and C2LAN/VDI environments, coordinating with network teams and command personnel to

Qualifications

• Bachelor’s degree and 2 years of relevant experience, or 4 years of relevant experience in lieu of a degree.
• Mid- to senior-level experience in a Systems Administrator or similar hands-on technical systems role.

Responsibilities

• Administer, operate, maintain, and troubleshoot enterprise, tactical, and deployable IT systems supporting mission-critical operations.
• Provide hands-on technical support to users and onsite personnel; diagnose and resolve hardware, software, operating system, virtualization, and enterprise-service issues in accordance with mission requirements and established service levels.
• Install, configure, upgrade, and maintain hardware, software, operating systems, user accounts, access controls, Windows and Linux systems, Active Directory, Group Policy, and Microsoft Exchange Server.
• Support and troubleshoot site IT infrastructure and related equipment, coordinating with network specialists or other technical teams for issues requiring advanced network engineering.
• Administer and maintain VMware ESXi/vSphere virtualization environments and VMware Horizon VDI.
• Support C2LAN environments, tactical IT systems, deployable equipment, and mission applications.
• Respond to system outages, service interruptions, exercises, deployments, and contingency operations; troubleshoot issues methodically, coordinate restoration activities, and help maintain operational readiness.
• Maintain technical documentation, configuration records, system procedures, and operational readiness documentation in accordance with DoD requirements.
• Communicate status, technical issues, and recommended actions clearly to command personnel, customers, and onsite teammates; support extended hours and alternate work schedules as required for 24/7 mission operations.

Job description

SAIC is seeking an onsite Systems Administrator in San Diego, CA to support the JEXC2 program across enterprise, tactical, and deployable IT environments. The role requires hands-on administration, troubleshooting, and operational support for mission-critical operations in a diverse IT stack.

The candidate will manage Windows and Linux systems, AD/GP, Exchange, virtualization (VMware ESXi/vSphere, Horizon), and C2LAN/VDI environments, coordinating with network teams and command personnel to