Sr. Principal System Administrator

Date Posted:

2026-06-01



Country:

United States of America

Location:

US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805

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: Top Secret

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. 

What You Will Do:

• Maintain, configure, and support enterprise IT systems, including servers, networks, and virtual environments.

• Monitor system performance and ensure availability, reliability, and security of infrastructure.

• Apply system updates, patches, and security configurations in accordance with organizational policies.

• Troubleshoot hardware, software, and network issues; provide timely resolution and root cause analysis.

• Manage user accounts, permissions, and access controls.

• Support backup, recovery, and disaster recovery planning efforts.

• Collaborate with cybersecurity and engineering teams to ensure compliance with applicable standards (e.g., STIGs, RMF).

• Maintain system documentation, configurations, and standard operating procedures.

What You Will Learn

• Advanced system administration techniques in secure and enterprise environments.

• Implementation and maintenance of cybersecurity compliance frameworks.

• Hands-on experience with modern tools for monitoring, logging, and automation.

• Best practices for system hardening and vulnerability management.

• Cross-functional collaboration within IT, cybersecurity, and engineering teams.

Qualifications You Must Have:

• Typically requires a University degree or equivalent experience and a minimum of 8 years of prior relevant experience or an Advanced Degree in a related field and a minimum of 5 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.

• Experience administering Windows and/or Linux-based systems.

• Experience with system patching, updates, and security configurations and networking fundamentals (TCP/IP, DNS, DHCP, etc.).

• Ability to troubleshoot and resolve technical issues in a timely manner.

Qualifications We Prefer:

• Experience with virtualization technologies (e.g., VMware, Hyper-V).

• Familiarity with cybersecurity frameworks (e.g., RMF, STIGs, NIST).

• Experience with tools such as Splunk, Syslog servers, or endpoint protection platforms.

• Scripting experience (e.g., PowerShell, Bash, Python).

• Relevant certifications (e.g., Security+, Network+, RHCSA, MCSA).

• Experience working in regulated or government environments.

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.

Learn More & Apply Now!

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 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.

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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