USAF - Jr. System Administrator

cFocus Software Incorporated; South Dakota; On-site; USD 110,000 - 150,000; Full time

Job summary

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

The candidate will manage enterprise Windows and Linux systems in high-availability environments, engineer Active Directory, perform capacity planning, and coordinate with multiple teams to ensure security and compliance across RMF and A&A processes.

Qualifications

• Active TS/SCI SSBI clearance required.
• B.S. in Computer Science, IT, or related field.
• 2+ years of Systems Administrator experience.
• Advanced Windows and Linux admin in high-availability environments.
• Active Directory engineering and privileged access management.
• Experience with enterprise virtualization and Nutanix.
• Configuration management, patching, and baseline control.
• Patch validation and production readiness processes.
• Backup, COOP, disaster recovery expertise.
• DoD RMF, A&A, and continuous monitoring familiarity.

Responsibilities

• Perform senior-level Windows and Linux systems administration for FMWF infrastructure and environments.
• Engineer, configure, and troubleshoot Active Directory, service accounts, and authentication dependencies.
• Conduct capacity planning, performance analysis, and Nutanix virtualization engineering.
• Monitor system health and implement corrective actions to ensure availability.
• Maintain configuration baselines and engineering records; ensure proper documentation.
• Engineer, test, validate, and deploy patches and security directives on schedule.
• Conduct vulnerability remediation without impacting availability.
• Assess proposed changes and validate post-deployment performance.
• Maintain controlled development/test environments and data support.
• Provide backup, restoration, and resilience support for development data.
• Support COOP, disaster recovery, and emergency maintenance activities.
• Provide Level III escalation with advanced diagnostics and root-cause analysis.
• Coordinate with DB2, WebSphere, cybersecurity, and Government stakeholders.
• Support cross-stack integration among infrastructure components and security tooling.
• Document changes, RMF evidence, and compliance-related artifacts.

Skills

TS/SCI clearance

Active Directory

Windows Admin

Linux Admin

Nutanix

RMF/DoD compliance

Disaster recovery

Education

B.S. Computer Science, Information Technology, or a related field

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.