Sr. Principal System Administrator Lead – Onsite (Secret)

globalhr; Tucson (AZ); On-site; USD 108,000 - 205,000; Full time

Benefits offered by this job

Relocation eligibility

Benefits package

Job summary

RTX in Tucson, AZ is seeking a Sr. Principal System Administrators Lead to support classified programs onsite. You will develop and maintain secure Windows and Red Hat Enterprise Linux environments, mentor teammates, and collaborate with Cybersecurity to ensure DoD compliance.

The role requires active DoD Secret clearance, strong leadership, and the ability to travel up to 5% to domestic sites. Join a mission-driven team protecting critical national security systems.

Qualifications

• Typically requires a bachelor's degree and a minimum of 8 years of prior relevant experience, or an advanced degree and 5 years of direct experience.
• Must have an active and transferable U.S. government issued secret security clearance prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Experience with Linux and Windows systems.

Responsibilities

• Provide IT systems administration in a heterogeneous Windows and Red Hat Enterprise Linux environment.
• Maintain Active Directory, Group Policy, and DNS configurations.
• Lead or mentor junior staff and coordinate with Cybersecurity for security compliance.
• Travel up to 5% to domestic US locations as needed.
• Operate in a 24x7 environment with occasional after-hours work.

Skills

Windows Server

Red Hat Linux

Active Directory

Cybersecurity

Scripting (Bash/Python)

Team leadership

Education

Bachelor's degree

Tools

Ansible

Red Hat Satellite

NetApp

Horizon/VDI

Job description

RTX in Tucson, AZ is seeking a Sr. Principal System Administrators Lead to support classified programs onsite. You will develop and maintain secure Windows and Red Hat Enterprise Linux environments, mentor teammates, and collaborate with Cybersecurity to ensure DoD compliance.

The role requires active DoD Secret clearance, strong leadership, and the ability to travel up to 5% to domestic sites. Join a mission-driven team protecting critical national security systems.