Senior Systems Administrator & Cyber Defense Operator

CAE USA; Arlington (TX); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Benefits package

Professional development

Job summary

CAE USA seeks a mission-focused Senior System Administrator to support IT operations, cybersecurity readiness, and infrastructure management in a defense contracting environment.

The role requires expert Windows and Linux administration, hardening, patching, and alignment with DoD RMF, NIST 800-53, and DISA STIG requirements. Travel up to 50% may be needed, with DoD clearance preferred.

Qualifications

• BS/BA in engineering, CS, or IT; Master’s preferred.
• 5+ years of system admin experience, cyber security focus.
• Experience with Windows Server and Linux systems administration.
• Knowledge of DoD RMF, NIST 800-53, and STIG requirements.

Responsibilities

• Support mixed Windows/Linux infrastructure and development environments.
• Develop and test automated deployment procedures.
• Provide expert troubleshooting for hardware, OS, and network issues.
• Maintain security posture and patch management aligned with DoD requirements.

Skills

Linux admin

Windows admin

VMware

Networking

Scripting

Security+

DoD clearance

Education

Bachelor's degree in engineering/CS/IT

5+ years related experience

Tools

VMware

GIT

Nessus/ACAS

Windows/Linux hardening

Job description

CAE USA seeks a mission-focused Senior System Administrator to support IT operations, cybersecurity readiness, and infrastructure management in a defense contracting environment.

The role requires expert Windows and Linux administration, hardening, patching, and alignment with DoD RMF, NIST 800-53, and DISA STIG requirements. Travel up to 50% may be needed, with DoD clearance preferred.