Sr. Principal System Administrators Lead, based in Tucson, AZ

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

Date Posted: 2026-09-29

Country: United States of America

Location: US-AZ-TUCSON-9030 ~ 9030 S Rita Rd ~ BLDG 9030

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 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 freedom 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. 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.

OurDigital Technology (DT)organizationensures that Raytheon teammates across the globe can communicate,collaborateandinnovateforcustomersuccess. Wecreateleading-edge technologysolutionsto prevent security threats, secure the integrity of our systems andsupportIT infrastructures around the world.

Sr. Principal System Administrators Lead,based in Tucson, AZ internally known as Sr. PrincipalAnalyst InfrastructureWorkplaceServices,collaboratewith manyteams tosupportexciting, critical programs with classified information system capabilities.Successin this role means you candevelop, implement and maintain secure, cost-efficientenvironmentsacross various classified programs. Program teams rely on yourcollaborationand guidance to define computing requirements andcreateend-to-endsolutionstosolvecomplexIT infrastructure problems.

What You Will Do

• Provide IT systems administration in a heterogeneous Microsoft Windows and Red HatEnterpriselinuxenvironment.
• Understandingand knowledge of Windows Server to include but not limited to Active Directory, Group Policy, & DNS.
• Advanced Red Hat Enterprise Linux knowledge.
• Working as a team member in a fast-paced technological 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).
• Experience with data RAID, data encryption, and 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 todevelopsolutionsand documentation a variety of technical problems.
• Systems are operational 24x7 and occasionally require work effort beyond standard work hours.
• Travelis requiredto other US Domestic locations as businessneedsdictate up to 5% travel.
• 100% onsite

Qualifications You Must Have

• 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 a 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.
• Experience with Linux and Windows
• Must have experience with leading or mentoring others.

Qualifications We Prefer

• Strong leadership, teamwork, communication (written and oral), collaboration, and organizational skills.
• Deep experience with Red Hat Enterprise Linux (RHEL) and its ecosystem, including authentication and identity services (SSSD, LDAP, Kerberos, NIS) and file sharing/integration services (Samba, NFS).
• Expertise with automation and configuration management tools such as Ansible and Red Hat Satellite, along with strong scripting skills in Bash, Python, Perl, or C to support provisioning, patching, and lifecycle management.
• Familiarity with enterprise storage systems (e.g., NetApp) and virtual desktop infrastructure (VDI) technologies such as Horizon, Profile Unity, and NVIDIA GPU virtualization (NLS, DLS).
• Proficiency with monitoring, vulnerability scanning, and compliance assessment tools (ACAS, Splunk, Nessus, SCAP, STIG, Nagios, SolarWinds) and working knowledge of security frameworks (CMMC, NISPOM, JAFAN, JSIG, DFARS, DoD RMF).

What We Offer

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation.

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.

The salary range for this role is 107,500 USD - 204,500 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.

• Hired applicants may be eligible for benefits, including but not limited to, 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, and 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.
• 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.
• 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.

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