Principal System Administrator- Must have a active secret clearance

RTX; Tucson (AZ); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

Medical

401(k) match

Paid time off

Flexible schedules

Employee assistance program

Job summary

RTX is seeking a Principal System Administrator to support classified Raytheon programs in a 100% onsite role in Tucson, AZ. You will manage Windows and Linux environments, coordinate with Cybersecurity, and ensure secure, reliable IT infrastructure for sensitive programs.

The role requires an active Secret clearance, DoD-related certifications within 6 months, and willingness to travel up to 5%. Educational and experience requirements apply as listed.

Qualifications

• Requires a bachelor’s degree and 3–5+ years of relevant experience.
• Active and transferable Secret U.S. government security clearance required before start date; U.S. citizenship is required.
• Windows or Linux systems administration experience is required.
• Experience with ActiveDirectory, VMware, MySQL, or networking administration is required.

Responsibilities

• Provide IT systems administration in a heterogeneous Windows and Red Hat Enterprise Linux environment.
• Provisioning, installation/configuration, operation, and maintenance of systems hardware and software for classified programs.
• Understand Windows Server internals and Linux fundamentals including DNS, DHCP, AD, and replication methods.
• Collaborate in a fast-paced environment; troubleshoot hardware and OS integration issues.
• Manage data backups, storage, and disaster recovery processes; ensure security requirements with Cybersecurity teams.
• Remain able to obtain DoD 8140/8570 certifications within 6 months of start date.
• Role may require 24x7 operations and travel up to 5%.

Skills

Windows experience

Linux experience

ActiveDirectory

VMware

MySQL

Networking administration

Education

Bachelor’s degree

Tools

VMware vCenter

vSphere

ESX

Job description

Date Posted: 2026-11-05

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: Secret - Current

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

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. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world.

Empowering a global business. Providing affordable solutions. Delivering competitive discriminators by unleashing deep expertise. These are just some of the many ways the Digital Technology team at Raytheon creates success for our customers. Joining our team will allow you to collaborate with Raytheon organizations to enable business growth, speed, and agility through business innovation, technical proficiency, and operational excellence.

Our Digital Technology (DT) organization ensures that Raytheon teammates across the globe are able to communicate, collaborate and innovate for customers success. We create leading-edge technology solutions to prevent security threats, secure the integrity of our systems and support IT infrastructures around the world.

Principal System Administrators, internally known as Principal Analyst, infrastructure Workplace Services, collaborate with many teams to support exciting, critical programs with classified information system capabilities. Success in this role means you can develop, implement and maintain secure, cost-efficient environments across various classified programs. Program teams rely on your collaboration and guidance to define computing requirements and create end-to-end solutions to solve complex IT infrastructure problems.

What You Will Do:

• Provide IT systems administration in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux environment.
• Responsible for provisioning, installation/configuration, operation, and maintenance of systems hardware and software related to a Linux/Windows infrastructure for classified programs. Duties include, but are not limited to, server management (software and hardware); storage management (logical and physical); cross platform authentication and access management; data backup and restoration; software and license configuration; and workstation support
• Understandingand knowledge of Windows Server internals or Linux fundamentals to include DNS, DHCP, AD, and server replication methods.
• Working as a team member in a fast-pacedtechnological environment. Use troubleshooting techniques to resolve technical problems of a moderate to high scope and complexity to include the integration of hardware and operating systems (OS).
• Understanding data RAID, data backup uses and technologies. Install and configure software applications requested by end users.
• Work with Cybersecurity professionals to maintain security requirements and provide documentation and training on advanced IT processes and procedures and other tasks as assigned.
• Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification) within 6 months of start date.
• Must be able to develop solutions and documentation for a variety of technical problems.
• Systems are operational 24x7 and occasionally require work effort beyond standard work hours.
• Travel required up to 5%
• Full time 100% Onsite position

Qualifications You Must Have:

• Typically requires a bachelor’s degree and minimum of 5 years of prior relevant experience or a master’s degree and minimum of 3 years of prior relevant experience
• Must have an active and transferable Secret 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.
• Must have Windows or Linux experience systems administration experience.
• Experience in one of the following: ActiveDirectory, VMware, MySQL, networking administration experience.

Qualifications We Prefer:

• VMware highly desired
• 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
• In-depth working experience in Windows Server
• Experience with data storage, NAS, and SAN technologies and solutions
• Experience using VMWare vCenter, vSphere, and ESX and/or other virtual computing methods.
• Experiencesupporting engineers in software, simulations, and hardware development.

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.

• medical
• dental
• vision
• life insurance
• short-term disability
• long-term disability
• 401(k) match
• flexible spending accounts
• flexible work schedules
• employee assistance program
• Employee Scholar Program
• parental leave
• paid time off
• holidays

Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.

Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.

The salary range for this role is 86,800 USD - 165,200 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.

This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

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.

Relocation Eligibility

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attendselect steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.