Principal System Administrator

Date Posted : 2025-10-10

Country :

United States of America

Location :

TX190 : 2501 West University, McKinney 2501 West University , McKinney, TX, 75070 USA

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 :

DoD Clearance : Secret

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 :

Provide IT systems administration in a heterogeneous RedHat Enterprise / Microsoft Windows and environment.

Lead and coordinate the Red Hat Installation and configuration.

Design, develop and deploy RedHat Podman containers.

Participate in all phases of Engineering software installation and support, with emphasis on testing, documentation, and acceptance phases.

Experience in Windows Server internals or Linux fundamentals to include DNS, DHCP, AD, and server replication methods.

Work 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 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

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.

Systems are operational 24x7 and occasionally require work effort beyond standard work hours

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.

Experience with some of, but not limited to, the following technologies : RedHat Enterprise Linux, Active Directory, WSUS, VMware, BackupExec, NetBackup, prior systems administration experience, Windows or Linux administration, Backup and Recovery enterprise suites.

Qualifications We Prefer :

Active DoD TS clearance, or the ability to obtain one.

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

Experience with data storage, NAS, and SAN technologies and solutions

Experience supporting engineers in software, simulations, and hardware development

Experience with Microsoft WSUS, SCCM, and / or Exchange

High Performance Computing (HPC) experience in a Linux environment

Experience with Server architectures and troubleshooting methods and ability to assist in developing solutions and documentation to a variety of technical problems

Experience using VMWare vCenter, vSphere, Linux Desktops, Windows desktops (Windows 10 / 11), Splunk and ESX and / or other virtual computing methods

Scripting / automation PowerShell, Bash

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 82,000 USD - 164,000 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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