Senior Systems Administrator-DoD/TS/SCI, Onsite Ellsworth

cFocus Software Incorporated; Box Elder (SD); On-site; USD 120,000 - 160,000; Full time

Job summary

cFocus Software Incorporated seeks a Sr. System Administrator to join our program supporting the United States Air Force. This onsite role is based at Ellsworth AFB, SD and requires a TS/SCI SSBI clearance.

The position involves Windows and Linux administration in high-availability environments, AD engineering, and DoD cybersecurity compliance. You will collaborate across teams and provide Level III support to ensure mission readiness.

Qualifications

• Active TS/SCI SSBI clearance required.
• 10+ years of systems administrator experience.
• Experience administering enterprise Windows and Linux in high-availability environments.
• DoD 8570 IAT Level II and DoD 8140 451-Intermediate certifications required.

Responsibilities

• Perform senior-level Windows and Linux systems administration for FMWF infrastructure and mission environments.
• Engineer and troubleshoot Active Directory, service accounts, permissions, and authentication dependencies.
• Monitor system health, perform capacity planning, and implement corrective actions.

Skills

TS/SCI clearance

Windows systems administration

Linux systems administration

Active Directory engineering

Nutanix virtualization

Disaster recovery planning

RMF compliance

Education

B.S. Computer Science / Information Technology / related field

Tools

Nutanix

Job description

cFocus Software Incorporated seeks a Sr. System Administrator to join our program supporting the United States Air Force. This onsite role is based at Ellsworth AFB, SD and requires a TS/SCI SSBI clearance.

The position involves Windows and Linux administration in high-availability environments, AD engineering, and DoD cybersecurity compliance. You will collaborate across teams and provide Level III support to ensure mission readiness.