IT System Administrator

APR Consulting, Inc.; Scottsdale (AZ); On-site; USD 84,000 - 119,000; Full time

Job summary

APR Consulting, Inc. is seeking an IT System Administrator to support DoD/Aerospace programs in Scottsdale. You will administer and secure enterprise servers across Linux and Windows, align with RMF, perform vulnerability remediation, and participate in security testing and incident response.

You will collaborate with cybersecurity professionals and engineering teams to ensure compliance with government requirements and internal policies.

Qualifications

• Bachelor’s degree plus 5+ years of relevant experience; or Master’s degree plus 3+ years.
• Experience administering RHEL and Windows Server environments.
• Experience installing, configuring, upgrading, and maintaining servers.
• Knowledge of Ansible and playbooks.
• Cybersecurity compliance, system hardening, and vulnerability remediation.
• Experience with security tools like SCAP, Nessus, ACAS, STIGs.
• VMware and Docker administration experience.
• Bash and Python scripting.
• Identity management and domain administration.
• General network administration including DHCP/NFS.

Responsibilities

• Administer, secure, and maintain enterprise server infrastructure across Linux and Windows.
• Support cybersecurity compliance initiatives and RMF activities.
• Perform vulnerability remediation and continuous monitoring.
• Install, configure, upgrade, and maintain server systems.
• Collaborate with cybersecurity and engineering teams to stay compliant.

Skills

RHEL administration

Windows Server administration

Ansible playbooks

Cybersecurity compliance

Vulnerability remediation

Security assessments

VMware administration

Docker administration

Bash and Python scripting

Identity/domain administration

Networking (DHCP, NFS)

Education

Bachelor’s degree in Systems Engineering, IT, CS, Engineering, Mathematics, or related

Master’s degree in related field

Tools

SCAP Compliance Checker

STIG Viewer

ACAS/Nessus

Job description

Our DoD/Aerospace Client is looking to fill an IT System Administrator position supporting critical defense and aerospace programs. This role offers the opportunity to support secure, mission-critical systems while working closely with cybersecurity and engineering teams to maintain and enhance classified computing environments.

The position is based on-site and supports the full system lifecycle through server administration, cybersecurity compliance, vulnerability management, and systems maintenance in a highly regulated environment.

Location: Scottsdale, AZ
Position: IT System Administrator
Contract Length: 12-24 Months (Potential for Direct Hire)
Pay: $73.51/hour
Education/Experience: Bachelor’s degree in Systems Engineering, Computer Science, Information Technology, Engineering, Mathematics, or a related technical field plus 5+ years of relevant experience; or Master’s degree plus 3+ years of relevant experience
Schedule: TBD
Clearance Requirement: Must be eligible for access to classified information; U.S. Citizenship required

Position Overview

As the IT System Administrator, you’ll be responsible for administering, securing, and maintaining enterprise server infrastructure across Linux and Windows environments. This role supports cybersecurity compliance initiatives, Risk Management Framework (RMF) activities, configuration management, vulnerability remediation, and continuous monitoring efforts throughout the system lifecycle.

You will install, configure, upgrade, and maintain server systems while supporting security testing, audits, assessments, and incident response activities. The role requires close collaboration with cybersecurity professionals and engineering teams to ensure systems remain compliant with government security requirements and internal security policies.

Daily responsibilities include server administration, automation development, vulnerability management, system hardening, security scanning, configuration management, and maintenance of hardware and software assets supporting mission-critical operations.

What You Bring to the Table:

• Bachelor’s degree in Systems Engineering, Information Technology, Computer Science, Engineering, Mathematics, or related technical discipline plus 5+ years of relevant experience; or Master’s degree plus 3+ years of relevant experience
• Experience administering Red Hat Enterprise Linux (RHEL) and Microsoft Windows Server environments
• Experience installing, configuring, upgrading, and maintaining servers
• Knowledge of Ansible and experience developing and maintaining Ansible playbooks
• Experience with cybersecurity compliance, system hardening, and vulnerability remediation
• Experience using security assessment and compliance tools such as SCAP Compliance Checker, STIG Viewer, ACAS/Nessus, and related tools
• Experience with hardware/software configuration management
• Knowledge of STIGs and security vulnerability resolution processes
• Experience with VMware administration
• Experience with Docker administration
• Experience with Bash and Python scripting
• Experience with identity management and domain administration
• General network administration experience, including DHCP and NFS configuration
• Experience installing and configuring third-party software applications supporting system functionality and cybersecurity services
• Proficiency with Assured File Transfer (AFT) procedures
• Experience supporting security audits, vulnerability assessments, continuous monitoring, and incident response activities
• Ability to work independently with minimal supervision
• U.S. citizenship required
• Must be eligible to obtain and maintain access to classified information and successfully complete a U.S. Government security investigation

What Sets You Apart:

• DoD 8570 certification meeting IAM Level I requirements (e.g., Security+ CE, CAP, GSLC)
• Strong written and verbal communication skills
• Experience working in cross-functional engineering and cybersecurity teams
• Experience supporting systems throughout the full system development and operational lifecycle
• Advanced experience with automation, security compliance, and secure system administration in DoD environments

About Our Client:

Our client is a mission-critical DoD/Aerospace defense contractor developing solutions that lead, serve, and protect our nation. Our client develops strategic systems supporting defense, civil government, intelligence, and cyber missions worldwide.

We are an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.