Principal System Administrator

Raytheon; Tucson (AZ); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Relocation assistance

Job summary

RTX in Tucson, AZ is seeking an IT Systems Administrator to support SIPR and other classified information systems onsite. The role focuses on Windows and Linux environments, virtualization, and security compliance.

You will collaborate with Cybersecurity and operations teams to maintain DoD security requirements, manage DNS/DHCP/AD, and ensure 24x7 system readiness. Travel up to 10% may be required.

Qualifications

• Active DoD Secret clearance required before start date.
• Windows or Linux system administration experience.
• Experience with AD, VMware, and networking administration.

Responsibilities

• Provide IT systems administration in a Windows/Linux environment supporting SIPR and other information systems.
• Manage virtualized environments and server infrastructure.
• Configure DNS, DHCP, AD, and replication.
• Assist cybersecurity teams to maintain security requirements.
• Travel up to 10% and work onsite 24x7 coverage as needed.

Skills

Security clearance

Windows/Linux experience

Active Directory experience

VMware experience

Education

University degree or equivalent experience

Tools

VMware

Windows Server tools

Networking tooling

Job description

Date Posted: 2026-08-13

Country: United States of America

Location: US-AZ-TUCSON-848 ~ 1151 E Hermans Rd ~ BLDG 848

Position Role Type: Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Security Clearance Type: DoD Clearance: Secret

Security Clearance Status: Active and existing security clearance required on day 1

Job Description At RTX, the world\'s largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression.

What You Will Do:

• Provide IT systems administration in a heterogeneous Microsoft Windows environment supporting SIPR and other information systems.
• Work as a team member in a fast-paced technological environment. Use troubleshooting techniques to resolve technical problems of basic to moderate scope and complexity to include the integration of hardware and operating systems.
• Manage virtualized environments.
• Utilize your experience with Windows Server internals to include DNS, DHCP, AD, and server replication methods.
• Utilize your experience with hardware RAID, hardware and software encryption and server management tools.
• Utilize your experience in data backup and restore, using industry best practice.
• Install and configure software applications requested by end users.
• Work with Cybersecurity professionals to maintain security requirements.
• Obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification) within 6 months of start date.
• Systems are operational 24x7 and occasionally require work effort beyond standard work hours.
• Travel required as business needs dictate to other US Domestic locations, up to 10% per year.
• Work full time, 100% Onsite position.

Qualifications You Must Have:

• Typically requires a University degree or equivalent experience and a minimum of 5 years of prior relevant experience or an Advanced Degree in a related field and minimum 3 years experience.
• Active and transferable U.S. government issued Secret security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Windows and/or Linux experience.
• Experience in one of the following: Active Directory, VMware, networking administration experience.

Qualifications We Prefer:

• An Active and transferable U.S. government issued Top Secret security clearance.
• Experience with Containerization Technologies such as OpenShift, Kubernetes, Docker, Tanzu, and Rancher.
• Experience with Continuous Integration\Continuous Delivery Tools such as Gitlab, Jenkins, and Azure DevOps.
• Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification and an Operating System Certification).
• Experience with NISPOM, JAFAN, JSIG, DFARS and/or DoD/RMF, data storage, NAS, and SAN technologies and solutions.
• Experience using VMWare vCenter, vSphere, and ESX and/or other virtual computing methods.
• Experience with Microsoft WSUS, MECM, and/or Exchange.
• High Performance Computing (HPC) experience in a Linux environment.

What We Offer

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation. Relocation assistance is available.
• Relocation assistance available, provided final candidate meets eligibility requirements.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

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