Senior Systems Administrator - Windows/Linux & Virtualization

Chickasaw Nation Industries, Inc.; Ellsworth Air Force Base (SD); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Medical

Dental

Vision

401(k)

Family Planning

Fertility Assistance

STD/LTD

Life Insurance

AD&D

Legal Aid

EAP

PTO

Training & Development

Job summary

Chickasaw Nation Industries, Inc. seeks a mid to senior Systems Administrator IV to support mission-critical FM systems.

You will perform Windows and Linux administration, manage virtualization (Nutanix), maintain baselines, apply patches, and ensure system availability under senior technical direction. Responsibilities include documenting configurations, supporting account and directory services, and complying with sustainment and cybersecurity directives such as IAVA and NOTAM.

Qualifications

• Bachelor’s degree or equivalent with nine years of relevant experience or combination of education/experience.
• Experience administering Windows and Linux systems in a DoD/government environment preferred.
• Familiarity with patch orchestration and cyber hygiene directives.

Responsibilities

• Perform routine Windows and Linux systems administration, including configuration, patching, monitoring and troubleshooting.
• Support virtualization environments (e.g., Nutanix) with VM provisioning and performance checks.
• Maintain baselines and documentation for configurations and approved changes.
• Assist in patch validation and in sustaining cybersecurity directives (IAVA/TCNO/NOTAM).
• Provide diagnostic support and escalate complex issues to senior engineers.

Skills

Windows Admin

Linux Admin

Virtualization

Patch Management

Security Compliance

DoD 8140

Incident Response

Education

Bachelor’s degree or equivalent

Tools

Nutanix

Active Directory

Job description

Chickasaw Nation Industries, Inc. seeks a mid to senior Systems Administrator IV to support mission-critical FM systems.

You will perform Windows and Linux administration, manage virtualization (Nutanix), maintain baselines, apply patches, and ensure system availability under senior technical direction. Responsibilities include documenting configurations, supporting account and directory services, and complying with sustainment and cybersecurity directives such as IAVA and NOTAM.