Principal Engineer - Warhead/Lethality

Date Posted: 2026-04-15 Country: United States of America Location: US-AZ-TUCSON-M09 ~ 3350 E Hemisphere Loop ~ BLDG M09 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 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. The Energetics and Propulsion Department is an engineering organization in the Hardware Engineering Directorate. This Department is responsible for the full spectrum of warhead, fuzing, and propulsion designs/technology, including power systems, ignition, and all other weapon initiation safety systems technology. The department is seeking to hire a Principal Engineer - Warhead. The Principal Engineer – Warhead/Lethality role is in Tucson, AZ and is an onsite position. What You Will Do Apply or develop highly advanced technologies, scientific principles, theories, and concepts to warhead integration into missile systems Involvement with both development and production programs across Raytheon Product Lines Interface with the Customer to identify user needs Work with customers, subcontractors and suppliers to resolve engineering issues, develop new products and hold technical reviews Conduct hydrocode simulation and lethality analysis Support warhead design, analysis, test, and evaluation Develop Statements of Work (SOWs) Develop Critical Item Development Specifications (CIDS) and Technical Data Packages (TDP) Support fact-finding and contract negotiations Ensure technical rigor and depth of all deliverables Will travel periodically to government and subcontractor facilities Qualifications You Must Have Bachelor’s Degree in Science, Technology, Engineering, or Mathematics (STEM) and minimum of eight (8) years of prior relevant experience OR an Advanced degree and five (5) years of relevant experience Eight (8) years of experience in the development of warheads from conceptual design through final test / assembly Project Management as applied to team interaction and deliverables The ability to obtain and maintain a US security clearance prior to the start date. U.S. citizenship is required as only U.S. citizens are eligible for a security clearance Qualifications We Prefer Advanced degree Ten (10) or more years of directly related experience in warhead design, analysis and development from conceptual design through final test and assembly, etc. Demonstrated ability to develop and lead collaborative efforts with other technical disciplines including structural, thermal, and aerodynamics Technical writing skills in the area of detailed design requirements, test requirements, statements of work, white paper and technical presentations Supplier collaboration experience and oversight generating specifications and statements of work (SOW) Working knowledge or experience with either missile design or development, production support and integration Experience with DoD customers and/or associated contractor executives and technical leadership Active Secret or Top Secret Clearance (Department of Defense) Learn More & Apply Now RTX Corporation 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 Systems, Pratt & Whitney, and Raytheon. Its 185,000 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, VA. What We Offer Whether you’re just starting out on your career journey or are an experienced professional, we offer a robust total rewards package with compensation; healthcare, wellness, retirement and work/life benefits; career development and recognition programs. Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance and child/adult backup care. 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. #LI-ST1 As part of our commitment to maintaining a secure hiring process, candidates may be asked to attendselect 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 107,500 USD - 204,500 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