USAF - Jr. System Administrator

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

Job summary

cFocus Software Incorporated is seeking a Sr. System Administrator to join our Air Force program. The role is onsite at Ellsworth AFB, SD and requires TS/SCI SSBI clearance.

You will administer Windows and Linux systems, manage Active Directory, and coordinate with cross-functional teams to ensure secure, resilient operations. Responsibilities include patch validation, vulnerability remediation, RMF compliance, and incident response.

Qualifications

• Active TS/SCI SSBI clearance required.
• B.S. in CS / IT or related field.
• 2+ years of Systems Administrator experience.
• Advanced Windows and Linux administration in high-availability environments.
• Experience with Active Directory engineering, IAM and privileged operations.
• Nutanix virtualization experience is strongly aligned.
• Patch management, baseline control, and vulnerability remediation.
• RMF, A&A, continuous monitoring, and DoD cybersecurity compliance knowledge.
• Ability to coordinate with multiple teams and Government stakeholders.

Responsibilities

• Perform senior-level Windows and Linux administration for mission environments.
• Engineer and troubleshoot Active Directory, service accounts, and permissions.
• Analyze performance, plan capacity, and perform virtualization engineering in Nutanix.
• Monitor health, identify degradation, and implement corrective actions.
• Maintain baselines, configuration data, and engineering documentation.
• Patch, validate, and deploy security directives within timelines.
• Conduct vulnerability remediation without compromising availability.
• Analyze changes, validate production readiness, and support test environments.
• Provide data protection, backup, and disaster recovery support.
• Coordinate with DB2, WebSphere, CyberArk, cybersecurity staff and stakeholders.

Skills

Windows administration

Linux administration

Active Directory engineering

Identity and access management

System monitoring

High-availability environments

Tier III support

Education

B.S. Computer Science / Information Technology

Tools

Nutanix

WebSphere

DB2

CyberArk

Job description

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
• 2+ 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.