Senior Systems Administrator (Onsite)

Date Posted: 2026-05-26 Country: United States of America Location: US-AZ-TUCSON-802 ~ 1151 E Hermans Rd ~ BLDG 802 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: Secret - Current Security Clearance Status: Active and existing security clearance required on day 1 At RTX, the worlds 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. 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. We are hiring for a Systems Administrator to join our Digital Technology (DT) team in Tucson, AZ. The DT organization ensures that Raytheon teammates across the globe are able to communicate, collaborate and innovate for customer success. We create leading-edge technology solutions to prevent security threats, secure the integrity of our systems and support IT infrastructures around the world. What You Will Do: Provide IT systems administration support in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux environment. Apply foundational experience of Windows Server or Linux systems, including core services such as DNS, DHCP, Active Directory, and basic server roles. Work as part of a collaborative team in a fast‑paced environment. Use established troubleshooting techniques to resolve moderate to complex technical issues involving operating systems, hardware integration, and enterprise services. Support data storage and backup operations, including RAID concepts and backup/restore technologies. Install, configure, and support software applications requested by end users. Partner with Cybersecurity teams to maintain system security requirements, follow established processes, and assist with documentation and training for IT procedures. Additional responsibilities may be assigned as operational needs evolve. Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 certification requirements (CompTIA Security+ CE or equivalent) within 6 months of start. Systems operate 24x7 and may require occasional work outside standard business hours. Qualifications You Must Have: Typically requires a University degree or equivalent experience and a minimum of 2 years of prior relevant experience, or an Advanced Degree in a related field. 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 working with Windows and/or Linux operating systems. Experience with one or more of the following technologies: Active Directory WSUS, VMware, MECM, Exchange, system administration, network administration, Windows or Linux server support, and enterprise backup/recovery tools. Qualifications We Value: DoD 8140 / 8570 certification requirements (CompTIA Security+ CE or equivalent), including OS‑specific certifications. Experience supporting compliance activities such as NISPOM, JAFAN, JSIG, DFARS, or DoD/RMF. Experience with Windows Server administration. Experience with data storage technologies, including NAS and SAN solutions. Experience working within an IT project lifecycle or structured process environment. Experience with VMware products such as vCenter, vSphere, and ESXi or other virtualization platforms. Experience supporting engineering teams working on software, simulation, or hardware development. Experience with Microsoft WSUS, MECM, Skype, SharePoint, and/or Exchange. Exposure to High Performance Computing (HPC) environments. Scripting experience (PowerShell, Bash, or similar). 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 68,900 USD - 131,100 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. Privacy Policy and Terms: Click on this link to read the Policy and Terms RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.