Systems Administrator IV

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

The Systems Administrator IV provides mid‑level infrastructure and systems administration support for the client systems. This role assists with Windows/Linux administration, virtualization operations, baseline configuration maintenance, patch validation, account management, and routine troubleshooting required to sustain mission‑critical FM systems. The System Administrator works under senior technical direction and supports configuration integrity, system availability, and compliance with sustainment and cybersecurity directives.

Chickasaw Nation Industries, Inc. serves as a holding company with multiple subsidiaries engaged in several lines of business (Business Services, Health, Infrastructure and Engineering, Mission Optimization, Technology and Transportation) for the federal government and commercial enterprises. A portion of our profits is used to support Chickasaw citizens. We are proud to support the economic development and long‑term viability of the Chickasaw Nation and its people. CNI offers premium benefits eligible on the first day of hire to full time employees; (Medical - Dental – Vision), Company Life Insurance, Short-Term and Long-Term Disability Insurance, 401(K) Immediate Vesting, Professional Development Assistance, Legal Aid Assistance Program, Family Planning / Fertility Assistance, Personal Time Off, and Observance of Federal Holidays.

As a federal contractor, CNI is a drug‑free workplace and adheres to the Federal Controlled Substance Act.

ESSENTIAL REQUIREMENTS

The ability to obtain, maintain and access classified information at the Secret level.

Required Certification at the DoD 8140 WRC 722, Intermediate level - GMON, SecurityX/CASP+, CCISO, CCSP, CGRC/CAP, CISSO, Cloud+, GCSA, GSEC, Security+, or SSCP

Must comply with cybersecurity patch directives (IAVA, TCNO, NOTAM) and sustainment processes.

ESSENTIAL DUTIES AND RESPONSIBILITIES

• Essential Duties and responsibilities include the following. Other duties may be assigned.
• Perform routine Windows and Linux systems administration, including system configuration, patch application, monitoring, and troubleshooting.
• Support virtualization environments (e.g., Nutanix) by assisting with VM provisioning, configuration, and performance checks.
• Maintain system configuration baselines, ensuring updates are properly documented and aligned with approved engineering changes.
• Implement and assist in validating patch engineering requirements associated with IAVA, TCNO, and NOTAM directives.
• Provide entry level diagnostic support, contribute to root cause investigations, and elevate complex issues to senior engineers.
• Assist in maintaining test and development environments, supporting patch testing, configuration control, and test data accuracy.
• Support service account management, directory services configuration, and routine system administration tasks.
• Maintain accurate system documentation, configuration records, and sustainment artifacts in accordance with PWS configuration management expectations.

EDUCATION AND EXPERIENCE

Bachelor’s degree and a minimum of nine (9) years of relevant experience, or equivalent combination of education/experience.

PHYSICAL DEMANDS

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions of this job. Work is primarily performed in an office/warehouse setting. Regularly required to use hands to finger, handle, or feel. Regularly required to reach with hands and arms, occasionally above head. Regularly required to twist at the waist, climb and descend stairs while carrying objects. Ability to speak and hear. Frequently required to stand, walk, stoop, kneel, crouch or crawl. Occasionally required to sit and climb or balance. Regularly lifts and/or moves up to twenty‑five pounds and occasionally lifts and/or moves up to fifty pounds. Works near moving mechanical parts. Regularly exposed to general office and general office machinery noise. May be exposed to warehouse, truck or forklift noise.

EOE including Disability/Vet

CNI offers a comprehensive benefits package that includes:

• Medical
• Dental
• Vision
• 401(k)
• Family Planning/Fertility Assistance
• STD/LTD/Basic Life/AD&D
• Legal‑Aid Program
• Employee Assistance Program (EAP)
• Paid Time Off (PTO)
• Training and Development Opportunities

#INDCNI