Principal System Administrator
RTX · tucson, Arizona ·
- Work mode
- Onsite
- Seniority
- Principal
- Employment
- Full time
- Category
- Devops
- Experience
- 3+ years
- Company size
- 1000+
- Salary
- USD 86,800 – 165,200 / year
RTX · tucson, Arizona ·
Amentum · US-DC-Washington
gdit · USA VA Falls Church
Northrop Grumman · United States-Virginia-Dulles
Independent Software · Annapolis Junction, MD
Principal System Administrator maintains Windows/Linux servers, Active Directory, VMware, and backup systems in a classified DoD environment, ensuring 24/7 availability and security compliance.
Date Posted:
2026-08-13Country:
United States of AmericaLocation:
US-AZ-TUCSON-848 ~ 1151 E Hermans Rd ~ BLDG 848Position Role Type:
OnsiteU.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 clearanceSecurity Clearance Type:
DoD Clearance: SecretSecurity Clearance Status:
Active and existing security clearance required on day 1At 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 freedoms 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.
What You Will Do:
Provide IT systems administration in a heterogeneous Microsoft Windows environment supporting SIPR and other information systems.
Work as a team member in a fast-paced technological environment. Use troubleshooting techniques to resolve technical problems of basic to moderate scope and complexity to include the integration of hardware and operating systems.
Manage virtualized environments.
Utilize your experience with Windows Server internals to include DNS, DHCP, AD, and server replication methods.
Utilize your experience with hardware RAID, hardware and software encryption and server management tools.
Utilize your experience in data backup and restore, using industry best practice.
Install and configure software applications requested by end users.
Work with Cybersecurity professionals to maintain security requirements.
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.
Travel required as business needs dictate to other US Domestic locations, up to 10% per year.
Work 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.
Windows and/or Linux experience.
Experience in one of the following: Active Directory, VMware, networking administration experience.
Qualifications We Prefer:
An Active and transferable U.S. government issued Top Secret security clearance.
Experience with Containerization Technologies such as OpenShift, Kubernetes, Docker, Tanzu, and Rancher.
Experience with Continuous Integration\Continuous Delivery Tools such as Gitlab, Jenkins, and Azure DevOps.
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, data storage, NAS, and SAN technologies and solutions.
Experience using VMWare vCenter, vSphere, and ESX and/or other virtual computing methods.
Experience with Microsoft WSUS, MECM, and/or Exchange.
High Performance Computing (HPC) experience in a Linux environment.
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. Relocation assistance is available.
Relocation assistance available, provided final candidate meets eligibility requirements.
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 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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Northrop Grumman · United States-Utah-Roy