Senior Systems Administrator - TS/SCI Clearance

Chickasaw Nation Industries, Inc.; Aberdeen (SD); On-site; USD 100,000 - 130,000; Full time

Benefits offered by this job

Medical

Dental

Vision

401(k)

Family Planning

Fertility Assistance

STD/LTD

Basic Life

AD&D

Legal Aid

EAP

Paid Time Off

Federal Holidays

Training & Development

Job summary

Chickasaw Nation Industries, Inc. (CNI) seeks a Systems Administrator V to maintain and secure enterprise IT infrastructure. The role covers Windows and Linux server administration, network device management, and end-user support while adhering to STIGs and security controls.

Eligible candidates must meet DoD 8570 IAM Level III requirements and US citizenship. As a federal contractor, CNI emphasizes strong security, documentation, and collaboration across IT teams.

Qualifications

• Bachelor's degree or equivalent in a related field.
• 5+ years of relevant experience or equivalent mix of education/experience.
• Must be able to obtain and maintain Top Secret/SCI access.

Responsibilities

• Perform daily system administration on Windows and Linux servers.
• Manage user accounts, patching, and apply STIGs.
• Administer network devices: switches, routers, firewalls.
• Provide Tier 1/2 user support and incident escalation.
• Monitor security logs and participate in incident response.
• Backups and disaster recovery testing; maintain documentation.

Skills

System administration

Network administration

Security monitoring

Technical support

Education

Bachelor's degree

Tools

Windows servers

Linux servers

STIGs

VTC setup

Job description

Chickasaw Nation Industries, Inc. (CNI) seeks a Systems Administrator V to maintain and secure enterprise IT infrastructure. The role covers Windows and Linux server administration, network device management, and end-user support while adhering to STIGs and security controls.

Eligible candidates must meet DoD 8570 IAM Level III requirements and US citizenship. As a federal contractor, CNI emphasizes strong security, documentation, and collaboration across IT teams.