Sr. System Administrator (Onsite)

Date Posted:2026-06-22 Country:United States of America Location:US-MA-MARLBOROUGH-MA3 ~ 1001 Boston Post Rd ~ BLDG 3 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 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 Empowering a global business. Providing affordable solutions. Delivering competitive discriminators by unleashing deep expertise. These are just some of the many ways the Digital Technology team at Raytheon Technologies creates success for our customers. Joining our team will allow you to collaborate with Raytheon organizations to enable business growth, speed, and agility through business innovation, technical proficiency, and operational excellence. Our Digital Technology (DT) organization ensures that Raytheon teammates across the globe can 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. Principal System Administrator based in Marlborough, MA, internally known as Principal Analyst, Information Workplace Services 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 Do:Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux environment.Understanding and knowledge of Windows Server internals or Linux fundamentals to include DNS, DHCP, AD, and server replication methods. Working 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).Work with Cybersecurity professionals to maintain security requirements. Provide documentation and training on advanced IT processes and procedures and other tasks as assigned.Must be able to 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.Full time 100% onsite position.Qualifications You Must Have:Typically requires bachelor’s and minimum of 2 years of relevant prior experience.Experience with Windows and Linux Operating systems.Experience with scripting.Experience with helpdesk operations, ticket troubleshooting and resolution.Experience with audit logs collection.Experience with system hardening.Must have a transferable current U.S. government issued secret security clearance prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.Qualifications We Prefer:Experience serving as a technical SME or primary point of contact for patching, vulnerability remediation, or compliance initiatives.Experience with VMware virtualization technologies, including ESXi, vCenter, VM lifecycle management, and host upgrades.Experience with securing system configurations, system hardening, STIG/EVAL STIG implementation, vulnerability remediation, and compliance.Experience with MECM/SCCM, PXE boot services, OS imaging, and automated software deployment frameworks.Experience with enterprise Windows services, including Active Directory, Group Policy, and identity integration.Familiarity with cybersecurity and compliance tooling, such as ACAS, SCAP, Splunk, STIG Viewer, and audit support processes.Relocation eligible What We OfferOur 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 requirementsLearn More & Apply NowPlease 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. 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