IT Systems Administrator – TS/SCI Polygraph | Windows, RHEL & RMF Cybersecu at Moseley Technical Services, Inc.

Scottsdale, Arizona, United States -

Full Time

Start Date

Immediate

Expiry Date

29 Aug, 26

Salary

0.0

Posted On

31 May, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Windows Server Administration, Red Hat Enterprise Linux (RHEL), Risk Management Framework (RMF), ACAS/Nessus, STIG Compliance, Cybersecurity Operations, Vulnerability Management, SCAP Compliance Checker, STIG Viewer, SIEM Analysis, Incident Response, Configuration Management, Secure System Administration, Information Assurance, DoD 8570 Compliance, Secure Data Handling

Industry

Defense and Space Manufacturing

Description

Check out this new opportunity! IT System Administrator Restricted Ground Systems Scottsdale, AZ Pay Estimated: $63.95 - $68.95/Hour Active Top Secret/SCI with Poly Clearance We are hiring an IT Systems Administrator in Scottsdale, AZ, to support secure Department of Defense (DoD) classified programs. This role requires an active TS/SCI clearance with Polygraph and hands-on experience administering Windows Server, Red Hat Enterprise Linux (RHEL), Risk Management Framework (RMF) activities, ACAS/Nessus vulnerability management, STIG compliance, cybersecurity operations, and secure system administration within classified environments. Responsibilities: Administer and maintain secure Windows and Red Hat Enterprise Linux (RHEL) environments supporting classified DoD programs. Support Information System (IS) Risk Management Framework (RMF) activities including system categorization, package preparation, security control implementation, and continuous monitoring. Perform weekly system audits, media reviews, and hardware/software configuration management activities. Execute monthly vulnerability scans using ACAS/Nessus and coordinate remediation efforts with technical teams. Utilize security assessment and hardening tools including SCAP Compliance Checker and STIG Viewer. Support Change Control processes, system upgrades, and lifecycle maintenance activities. Conduct security testing and evaluation to validate implementation of security controls. Assess, track, and mitigate system vulnerabilities throughout the system lifecycle. Review and analyze security event and information management (SIEM) data and audit user accounts. Perform incident response, containment, and cleanup activities in accordance with customer and company procedures. Ensure systems are operated and maintained in compliance with System Security Plans (SSP), security policies, and DoD requirements. Support Assured File Transfer (AFT) procedures and secure data handling processes. Qualifications: U.S. Citizenship is required by Federal Law Bachelor’s degree in Information Technology, Cybersecurity, Computer Science, or related field plus 5+ years of relevant experience; OR Master’s degree plus 3+ years of relevant experience. Active Department of Defense TS/SCI clearance with Polygraph at time of hire. Hands-on experience administering Red Hat Enterprise Linux (RHEL) and Windows environments. Experience with vulnerability assessment and system hardening tools including: ACAS / Nessus SCAP Compliance Checker STIG Viewer Understanding of Security Technical Implementation Guides (STIGs) and vulnerability remediation processes. Experience supporting RMF, continuous monitoring, and Information Assurance (IA) activities. Ability to install, configure, secure, and maintain servers in classified environments. Experience executing configuration management and audit review activities. Ability to work independently with minimal supervision. DoD 8570 IAM Level I certification preferred (Security+ CE, CAP, GSLC, etc.). Ability to support on-site classified program work in Scottsdale, AZ. Preferred Qualifications: Prior experience supporting classified DoD or Intelligence Community environments. Experience with SIEM review and security event analysis. Knowledge of incident response procedures within secure environments. Experience identifying automation or AI-driven improvements for cybersecurity operations. Moseley Technical Services, Inc. is an AA/EEO/Veterans/Disabled Employer. What to Expect Applicants selected for employment will be required to pass a pre-employment drug screening and background investigation, which may include education, criminal, and work history verifications. Accepted applicants will be eligible for benefits, including medical and supplemental insurance, and a 401(k) plan. Appreciation and gratitude for employees are hallmarks of organizations with low turnover. Final position level and pay will be based on experience. Resources To apply, send a resume to: resumes@moseleytechnical.com For more active job openings: Search Jobs For more information about Moseley, visit: About Us Moseley Technical Services, Inc. (Moseley) was incorporated in 1994 to provide engineering and professional services to the aerospace/defense, manufacturing, government, and commercial industries. Our Mission is to deliver superior service to our customers and employees. We have been successful in our vision by building long-term relationships with customers and employees through integrity, transparency, and appreciation. We stand by our 30-year-old commitment of “World Class Service. World Class Company.”

Responsibilities

Administer and maintain secure Windows and RHEL environments for classified DoD programs. Manage RMF activities, perform vulnerability scans using ACAS/Nessus, and ensure system compliance with security policies and STIGs.