Principal Systems Administrator, 100% onsite, McKinney, Texas, must have active secret clearance

Location: 2501 W University Dr, Wing D, McKinney, TX Date Posted: 2026-06-30 Country: United States of America Position Role Type: Onsite Security Clearance Type: Secret - Current Security Clearance Status: Active and existing security clearance required on day 1 Principal Systems Administrator 100% onsite, McKinney, Texas, must have active secret clearance. What You Will Do: 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. 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 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%. 100% onsite. Qualifications You Must Have Must have a bachelor’s degree and minimum of 5 years of prior relevant experience or a master’s degree and minimum of 3 years of prior relevant experience. Must have an active and transferable Secret U.S. government issued security clearance prior to start date. Must be able to get access to the program after start. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Must have Windows 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 Strong leadership, teamwork, communication (written and oral), collaboration, and organizational skills. Experience with using Information Technology project lifecycle management processes. An active DoD Top Secret. 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. High Performance Computing (HPC) experience in a Linux environment. 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. We offer relocation! 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 depend on 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. Equal Opportunity Employer 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. #J-18808-Ljbffr Raytheon