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USAF Sr. System Administrator

CFocus Softwareorporated

Job Location:

Ellsworth, WI - USA

Monthly Salary: Not provided by the employer

Posted: 6 August 2026 (12 hours ago)

Application Deadline: 3 November 2026

Vacancies: 1 Vacancy

Job Summary

cFocus Software seeks a Sr. System Administrator to join our program supporting the United States Air Force. This position is onsite with the onsite location being in Ellsworth South Dakota. This position requires a TS/SCI SSBI clearance.
Qualifications:

Active TS/SCI SSBI clearance
B.S. Computer Science Information Technology or a related field
10 years of Systems Administrator experience
Advanced experience administering and engineering enterprise Windows and Linux systems in a high-availability mission-critical environment.
Demonstrated experience with Active Directory engineering service-account configuration identity and access dependencies and privileged administrative operations.
Experience with enterprise virtualization infrastructure capacity planning performance analysis system monitoring and root cause engineering; Nutanix experience is strongly aligned to the PWS.
Hands-on experience with configuration management system baselines change control patch engineering vulnerability remediation and deployment validation.
Experience validating patches updates system modifications and enhancements in controlled development/test environments before production release.
Experience with backup recovery resilience COOP disaster recovery and emergency corrective maintenance for mission-essential systems.
Ability to provide senior/Level III support involving advanced diagnostics log analysis debugging fault isolation and sustainable corrective action.
Working knowledge of RMF Assessment and Authorization security control implementation continuous monitoring and DoD/Air Force cybersecurity compliance.
Ability to collaborate across infrastructure database middleware application cybersecurity and program-management teams and communicate technical findings to Government stakeholders.
Ability to work primarily at Ellsworth AFB during the PWS duty-hour window and support rare work at Wright-Patterson AFB or a contractor facility when required.
Active DoD 8570 IAT Level II & DoD 8140 System Administrator 451-Intermediate certifications required

Duties:

Perform senior-level Windows and Linux systems administration for FMWF infrastructure and associated mission environments.
Engineer configure administer and troubleshoot Active Directory service accounts authentication dependencies permissions and related enterprise services.
Perform infrastructure performance analysis capacity planning root cause engineering and enterprise virtualization engineering in Nutanix environments.
Monitor system health and availability; analyze performance degradation and implement sustainable corrective engineering actions.
Manage configuration baselines and technical baseline control for infrastructure components development assets system settings and administrative documentation.
Engineer test validate and deploy enterprise patches updates and security directives including IAVAs TCNOs and NOTAMs within prescribed timelines.
Conduct vulnerability remediation and validate that corrective actions do not compromise availability functionality security controls or configuration integrity.
Analyze proposed system modifications implement approved technical changes and validate post-deployment performance and production readiness.
Maintain controlled engineering development and test environments including configuration management patch validation and test data support.
Provide data-protection backup restoration recovery and resilience support; help ensure secure backup and appropriate off-site storage of development data.
Support continuity-of-operations (COOP) disaster recovery routine sustainment emergency maintenance and recovery activities requested by the PMO.
Provide Level III technical escalation support using advanced diagnostics log analysis debugging fault isolation and root cause analysis.
Coordinate technical activities with database administrators DB2 engineers WebSphere/middleware personnel cybersecurity staff developers CyberArk administrators and Government stakeholders.
Support cross-stack integration among infrastructure DB2 databases WebSphere middleware Active Directory virtualization and security tooling.
Implement and sustain applicable security controls and provide technical evidence supporting RMF Assessment and Authorization continuous monitoring and compliance activities.
Maintain accurate version-controlled system documentation engineering records configuration data test results incident records procedures and status reports.
Comply with Government change management technical review readiness review quality control QASP installation security and access-control requirements.