Principal Systems Engineer

Date Posted: 2026-07-16 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. Join us and help shape the future of aerospace and defense. 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) is an exciting and challenging environment where you will have the opportunity to design, develop and partner with multiple disciplines to shape innovative solutions for our customers. Join our organization and experience the Systems V engineering life cycle while interfacing with a variety of engineering disciplines, subject matter experts, Chief Engineers, Chief Technologists, the customer, and so many more to ensure we design, integrate, and strengthen our systems to work the first time and every time for our warfighters! SE&TC based in Tucson, Arizona supports it all, from the seabed to space, including Ship Launched Effectors like Standard Missile® and Tomahawk®, to Surface Launched Effectors like Javelin® and Coyote®, to Air Launched Effectors like AMRAAM® and StormBreaker®, to Advanced Technologies like Hypersonics and space solutions. We are seeking Systems Engineers to support missile programs in one of a variety of possible roles; As a Responsible Systems Engineer (RSE), 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.   As a RSE you would lead the effort to update and maintain all system and subsystem level requirements specifications and be the Systems technical lead ensuring all requirements are being assessed during Verification and Qualification testing.  You will engage with the Systems and Hardware teams and Chief Engineer on a variety of technical tasks.   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 t