Mission-Critical System Administrator II for Naval Ops

Christian Leadership Alliance; San Diego, Northern (CA, KY); Hybrid; USD 85,000 - 125,000; Full time

Job summary

PMAT seeks a System Administrator II to support Windows, Linux, ESXi, network, and tactical computing environments in a fast-paced, mission-critical setting. You will work with IT, cybersecurity, engineering, and operations teams to ensure secure, reliable, and mission-ready systems for warfighter support.

The role emphasizes patching, vulnerability remediation, hardening, backup/recovery, and strong documentation. On-site in San Diego with potential government facility work; requires U.S.

Qualifications

• Experience working as a system administrator or related technical role.
• Intermediate Linux command line experience to support system administration and operations.
• Experience supporting Windows and Linux OS, configuration, patching, monitoring, and troubleshooting.
• Understanding of TCP/IP, DNS, DHCP, VPNs, ports, routing, and firewall concepts.
• Experience with cybersecurity, access control, vulnerability remediation, and secure configuration.
• Strong problem-solving, analytical, time management, and multitasking skills.
• Excellent written and verbal communication with IT, cyber, engineering, data, and operational stakeholders.

Responsibilities

• Administer and maintain Windows, Linux, ESXi, network, and tactical computing environments with installation, configuration, updates, monitoring, and troubleshooting.
• Assist with patching, vulnerability remediation, security hardening, access control, and audit-ready documentation.
• Monitor server, network, and system performance; troubleshoot, optimize, and escalate risks as needed.
• Support backup and recovery procedures; maintain data protection and document recovery actions.
• Provide end-user and technical team support; document troubleshooting steps and coordinate follow-ups.
• Assist with network infrastructure support including routers, firewalls, VPNs and related devices.
• Support tactical systems and data environments; troubleshoot, monitor data pipelines, edge servers, embedded GPUs, and container workloads.
• Maintain system documentation, inventories, licenses, hardware tracking, and End-of-Life planning inputs.

Skills

Linux CLI

Windows & Linux OS

Networking basics

Cybersecurity

Troubleshooting

Documentation

Communication

Scripting & automation

Education

Bachelor's Degree or Equivalent Experience

Security+ Certification (Preferred)

Tools

VMware

Docker

Kubernetes

PowerShell

Bash

Python

Job description

PMAT seeks a System Administrator II to support Windows, Linux, ESXi, network, and tactical computing environments in a fast-paced, mission-critical setting. You will work with IT, cybersecurity, engineering, and operations teams to ensure secure, reliable, and mission-ready systems for warfighter support.

The role emphasizes patching, vulnerability remediation, hardening, backup/recovery, and strong documentation. On-site in San Diego with potential government facility work; requires U.S.