Senior System Administrator & SOC Operator — Defense Cyber

CAE; Arlington (TX); On-site; USD 90,000 - 130,000; Full time

Job summary

CAE is seeking a mission-focused Senior System Administrator to support IT operations, cybersecurity readiness, and RMF compliance in a defense contracting setting.

The role requires expert Windows and Linux administration, including hardening, deployment, patching, and configuration management across mixed environments, with DoD 8510.01 alignment and DISA STIGs.

Ideal candidates will have 5+ years of relevant experience, DoD security credentials, and the ability to work on-site in Arlington, TX.

Qualifications

• BS/BA in engineering, CS, or IT; Master's preferred.
• Minimum 5 years of related experience.
• Experience in Linux and Windows system administration.
• Experience with VMware, networking, and scripting.
• Ability to obtain DoD Secret Clearance; U.S. citizenship required.
• DoD 8140.03 compliance (CISSP/Security+ or OS cert) preferred.

Responsibilities

• Support IT operations and cybersecurity readiness in a defense environment.
• Administer mixed Windows and Linux infrastructures; patch management per RMF.
• Configure and maintain development environments and automated deployment.
• Provide expert Linux and Windows system administration and VMWare oversight.
• Assist with infrastructure lifecycle, testing, and problem solving.

Skills

Linux System Administration

Windows System Administration

Windows Server Administration

Network Administration

Scripting (bash, Python, PowerShell)

VMWare Administration

TCP/IP Networking

Troubleshooting & Problem Solving

Communication skills

Attention to detail

Education

BS/BA in engineering, CS, or IT

Master's degree or above preferred

Tools

WSUS

ACAS/Nessus

GitHub

Group Policy Objects

Job description

CAE is seeking a mission-focused Senior System Administrator to support IT operations, cybersecurity readiness, and RMF compliance in a defense contracting setting.

The role requires expert Windows and Linux administration, including hardening, deployment, patching, and configuration management across mixed environments, with DoD 8510.01 alignment and DISA STIGs.

Ideal candidates will have 5+ years of relevant experience, DoD security credentials, and the ability to work on-site in Arlington, TX.