Senior Systems Admin — Windows/Linux & Virtualization

Chickasaw Nation Industries, Inc.; Ellsworth (ME); Hybrid; USD 100,000 - 130,000; Full time

Benefits offered by this job

Medical

Dental

Vision

Life Insurance

STD/LTD

401(k)

Professional Development

Legal Aid

Family Planning

PTO

Holidays

Job summary

Chickasaw Nation Industries, Inc. seeks a Systems Administrator IV to provide mid‑level infrastructure and systems administration for client systems, including Windows and Linux, and virtualization operations.

You will maintain baselines, validate patches, manage accounts, and troubleshoot to sustain mission‑critical FM systems. The role requires DoD‑level certifications and the ability to work with cybersecurity directives, under senior technical direction while ensuring system availability and

Qualifications

• Bachelor's degree and a minimum of nine (9) years of relevant experience, or equivalent combination of education/experience.
• Ability to obtain, maintain and access classified information at the Secret level.
• DoD 8140 WRC 722, Intermediate level certifications (GMON, SecurityX/CASP+, CCISO, CCSP, CGRC/CAP, CISSO, Cloud+, GCSA, GSEC, SSCP)

Responsibilities

• Perform routine Windows and Linux systems administration, including configuration, patching, monitoring, and troubleshooting.
• Support virtualization environments (e.g., Nutanix) by provisioning and validating VM configurations and performance.
• Maintain system baselines and ensure changes are documented and aligned with engineering changes.
• Implement and validate patch requirements associated with IAVA, TCNO, NOTAM directives.
• Provide diagnostic support and escalate complex issues to senior engineers.
• Maintain test/dev environments, support patch testing, and ensure data integrity.
• Manage service accounts and directory services configuration; perform routine admin tasks.
• Keep accurate system documentation and sustainment artifacts per PM/CM expectations.

Skills

Windows administration

Linux administration

Patch management

Nutanix virtualization

Directory services

Documentation

Cybersecurity compliance

Education

Bachelor's degree

Tools

Nutanix

Job description

Chickasaw Nation Industries, Inc. seeks a Systems Administrator IV to provide mid‑level infrastructure and systems administration for client systems, including Windows and Linux, and virtualization operations.

You will maintain baselines, validate patches, manage accounts, and troubleshoot to sustain mission‑critical FM systems. The role requires DoD‑level certifications and the ability to work with cybersecurity directives, under senior technical direction while ensuring system availability and