System Administrator (Onsite)

Date Posted:2026-06-22 Country:United States of America Location:US-AZ-TUCSON-9030 ~ 9030 S Rita Rd ~ BLDG 9030 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 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. 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. Our Digital Technology (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.System Administrator will collaborate and support exciting, critical programs with classified information system capabilities. Success in this role means you can develop, implement, and maintain secure, cost-efficient  environments  across various classified programs. Program teams rely on your  collaboration and guidance to define computing requirements and create end-to-end solutions to solve complex IT infrastructure problems.What You Will DoProvide 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 U.S. Domestic locations, up to 10% per year. Qualifications You Must HaveTypically requires a University Degree or equivalent experience and less than 2 years of prior relevant experience.Experience with Windows or Linux OSsExperience with system hardening for security complianceActive 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 clearanceQualifications We PreferDepartment of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification and an Operating System Certification).Experience with Trellix Host Base Security System (HBSS), ePolicy Orchestrator (ePO), Endpoint Security (ENS) Policy Auditor (PA), Data Loss Prevention (DLP).Experience Deploying Windows workstations and migrating end-user data.Experience with Microsoft Windows Active Directory Services administration and support (e.g. user and computer objects administration, Group Policy).Experience with network services related to Microsoft Windows environment (e.g. DC, DNS, DHCP, etc.).US Citizen - Active and transferable U.S. government issued Top Secret security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearanceWhat We OfferOur 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.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 productsCandidates will learn more about role type and current site status throughout the recruiting process. For onsite and hybrid roles, commuting to and from the assigned site is the employee’s personal responsibility.As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-