Principal System Administrator

Date Posted: 2026-06-25 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: DoD Clearance: Secret Security Clearance Status: Active and existing security clearance required on day 1 RTX description: The world's largest aerospace and defense company, with 185,000 colleagues united by purpose to solve complex problems, offering opportunities across market-leading businesses, operations, and R&D. RTX emphasizes delivering solutions that defend freedoms and deter aggression, contributing to a safer world. 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. 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 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. 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. Privacy Policy and Terms: Click on this link to read the Policy and Terms #J-18808-Ljbffr Raytheon