Principal Systems Engineer

Date Posted: 2026-09-15 Country: United States of America Location: US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805 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: Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date At 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. Systems Engineering and Test Capabilities (SE&TC) offers the opportunity to design, develop, and integrate innovative solutions across the full systems engineering lifecycle. Working in a highly collaborative environment, engineers partner with multidisciplinary teams, subject matter experts, Chief Engineers, Chief Technologists, and customers to ensure complex systems are designed, integrated, and perform reliably from the first mission to every mission in support of the warfighter. Based in Tucson, Arizona, SE&TC supports a portfolio spanning domains from the seabed to space. Programs include Ship-Launched Effectors such as Standard Missile® and Tomahawk®, Surface-Launched Effectors such as Javelin® and Coyote®, Air-Launched Effectors such as AMRAAM® and StormBreaker®, as well as advanced technologies including hypersonic and space systems. As a Principal Systems Engineer, you will contribute directly to successful hardware or software requirements and integration for both fielded and development missile systems.  This includes managing system and subsystem requirements, providing Systems Engineering technical oversight during integration and test activities, participating in verification and validation efforts for the system, and providing expertise in troubleshooting and failure investigations.   Your responsibility would span the entire Systems V to include concept development, system architecture, technical trade studies, functional analysis and decomposition, requirements development and maintenance, system verification, obsolescence, production, and system maintenance. You would be responsible for cross team collaboration, sharing program process knowledge, mentoring engineers, and working with the technical and program leads to execute program tasks.  This role is 100% on-site at our Tucson, AZ campus with the possibility of occasional travel. What You Will Do Update, maintain, and improve requirements and requirements documentation for development and production efforts, including but not limited to software and hardware subsystems Create and manage systems architecture, requirements, interface definitions and description documents, system integration, and system verification using Cameo by collaborating with multiple product team leads and Subject Matter Experts (SMEs) to obtain necessary design information Participate in technical conversations with the customer Work with suppliers and the Supply Chain organization for procured items managed through the role of Responsible Engineering Authority (REA) for that assembly Lead verification and validation efforts, ensuring all requirements are being assessed during Verification and Qualification testing Conduct trade studies and present results to customers Work closely with the Software and Hardware teams and Chief Engineer on a variety of technical tasks Help to onboard, mentor, and guide team members using core Systems Engineering skills Provide technical expertise in development, integration, troubleshooting and failure investigations Lead Systems Verification Reviews with the Chief Engineer, Lead Systems Engineer, and Integrated Product Team Leadership Work closely with the Systems, Software, Configurable Logic, Hardware and Test teams on a variety of technical tasks Become the knowledgeable and ‘go-to’ Systems Engineer for the program Support Statistical Process Control assessments in the factory and as part of hardware verification of missile sections and launch platforms as well as at higher level assemblies Facilitate knowledge transfer within and across Integrated Product Teams and Cross Product Teams to include Cross-Functional collaboration and coordination Lead peer reviews and formal release of Contract Data Requirements Lists (CDRLs) and Technical Data Package (TDP) documents Support test equipment software integration and verification for system test Support system performance analysis Qualifications You Must Have  Typically requires a Bachelor’s Degree in a Science, Technology, Engineering, or Mathematics (STEM) discipline and a minimum of 8 years of relevant experience Experience with at least one of the following: software, firmware or configurable logic, hardware, integration, and/or test Experience in one or more of the following areas: Model-Based Systems Engineering (MBSE); requirements development; requirements management; requirements verification; CONOPS management; and system architecture Qualifications We Prefer Top Secret Clearance Experience with RTX products or related technologies is strongly valued Experience presenting