Systems Administrator II
Chickasaw Federal Health
Ellsworth AFB, SD · Posted October 19, 2026
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About the job
SUMMARY
The Systems Administrator II is responsible for managing, configuring, and supporting the client’s IT infrastructure, including servers, networks, and other critical systems.
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.
Must possess appropriate level of certifications for this position as required by the contract - IAT Level II
KEY DUTIES AND RESPONSIBILITIES
Essential Duties and responsibilities include the following. Other duties may be assigned.
Installs, configures, and maintains computer systems, servers, and network infrastructure.
Troubleshoots and resolve hardware, software, and network issues.
Monitors system performance, identify bottlenecks, and optimize system resources.
Implements and maintains security measures, including firewalls, antivirus software, and user access controls.
Develops and maintains system documentation, including network diagrams, configurations, and procedures.
Collaborates with other IT teams to ensure seamless integration of systems and applications.
Assists in the planning and execution of system upgrades and migrations.
EDUCATION AND EXPERIENCE
Bachelor's degree and a minimum of nine (9) years of relevant experience, or equivalent combination of education/experience.
PHYSICAL DEMANDS
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) – (11) Federal Holidays
Training and Development Opportunities
Your application submission will be considered for all potential employment opportunities with Chickasaw Nation Industries (CNI).