Senior Unix Systems Administrator Jobs in Tucson, AZ

Date Posted:
2026-05-11
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 RTX, the world 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.
Principal Systems Administrator Lead, 100% onsite, Tucson, Arizona, must have active secret clearance
Our Digital Technology (DT) organization ensures that Raytheon teammates across the globe can communicate, collaborate and innovate for customer 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, based in Tucson. AZ, internally known as Principal Analyst, infrastructure Workplace Services, collaborates with 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

• Principal System Administrator, in infrastructure Workplace Services, collaborate with a team to support fast-paced, critical programs with classified information system capabilities. Success in this role means you are able to 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.
• Provide IT systems administration in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux environment.
• Understanding and 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-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 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.
• Systems are operational 24x7 and occasionally require work effort beyond standard work hours.
• Travel is required to other US Domestic locations as business needs dictate. Frequency at 5%.

Qualifications You Must Have

• Typically requires a University Degree or equivalent experience and minimum of 5 years of prior relevant experience or an Advanced Degree and minimum of 3 years of experience.
• Active and transferable Secret U.S. government issued security clearance is required prior to start date with the ability to obtain special program access after start date.
• Must have Window or Linux experience
• Experience in one of the following: Linux/RHEL administration, Active Directory and Windows Domain administration, MECM, VMware, and recovery enterprise suites.

Qualifications We Prefer

• Demonstrated experience administering and sustaining legacy UNIX platforms, including Solaris (8/9/10) and HP-UX, with responsibilities spanning account management, patching constraints, and system stability in EOL environments
• Experience providing Tier 2 support for legacy Windows environments (XP/7), including troubleshooting and managing GPO impacts to operational/test systems
• Hands-on experience with NetApp FAS-series storage (FAS3250) or similar legacy storage platforms, including maintenance, performance monitoring, and data integrity support
• Experience supporting legacy and EOL applications (e.g., Visprise or similar manufacturing/operations tools), including sustainment strategies where vendor support is no longer available
• Experience building, configuring, and supporting Linux-based services, including Samba servers and data warehouse infrastructure
• Familiarity with virtualized/emulated legacy environments, including Solaris virtualization or queue-based test environments (e.g., QATE) for development and testing support
• Experience supporting Oracle database environments in steady-state operations, including coordination with DBAs and infrastructure dependencies
• Experience standing up and integrating new Linux-based systems within legacy ecosystems, ensuring compatibility with existing infrastructure Technology project lifecycle management processes.
• Experience with NISPOM, JAFAN, JSIG, DFARS and/or DoD/RMF
• In-depth working experience in Windows Server.
• Experience with NetApp ONTAP or other data storage, NAS, and SAN technologies and solutions.
• Experience using VMWare vCenter, vSphere, and ESX and/or other virtual computing methods.
• Experience supporting engineers in software, simulations, and hardware development.
• Experience with Microsoft WSUS, MECM, SharePoint, Skype and/or Exchange
• Experience with Tenable Nessus, Splunk, and/or Ivanti Security Controls.
• Scripting Experience in APIs, PowerShell, Bash, and/or Ansible.

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 assistance available, provided final candidate meets eligibility requirements

Learn More & Apply Now!

• Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as: Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select 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 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.
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.
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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