Principal Mechanical Engineer

Date Posted: 2026-06-01 Country: United States of America Location: US-AZ-TUCSON-M02 ~ 1151 E Hermans Rd ~ BLDG M02 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 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 Mechanical Engineering group in the Shipboard Effectors Department is currently searching for an experienced Mechanical Design Engineer to work on a multi-discipline team to support design and upgrades of Shipboard Effectors products and subsystems. This is an onsite role and located in Tucson, AZ. What You Will Do: Utilizing strong mechanical hardware design experience and knowledge with ruggedized structures, interconnects, cooling, and electronics integration Supporting all phases of programs from capture and concept development through production Developing technical solutions to a wide range of complex problems related to the entire product life cycle including proposal, design, manufacture, integration and test of electronics for multiple military programs Supervising the definitions of mechanical outline and construction details, component selection and specification, mechanical and assembly drawings, electrical/RF layout, and delivering the final technical data package Employing transition-to-production practices with the ability to lead a design release into production Tracking, reporting, and meeting cost, schedule, quality, and performance requirements for the finished product, including Earned Value (EV) management and Estimate at Complete (EAC) inputs Preparing proposal inputs on behalf of the product area Providing technical conscience, challenged with making sure the product and process meet appropriate standards and requirements while helping to remove roadblocks Working with minimal direction or supervision, while exercising considerable latitude in determining the technical objectives of the assignment while meeting cost, schedule, quality, and performance requirements for the finished product. Leading a small team of mechanical engineers when required Interacting frequently with senior personnel, occasionally including external customers, on significant technical matters often requiring coordination between organizations. Qualifications You Must Have: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience or An Advanced Degree in a related field and minimum 5 years experience. A minimum of eight (8) years of experience in the design of electronics packaging for military or aerospace or commercial applications Experience with GD&T (Geometric Dimensioning & Tolerances) 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: Experience with ANSI drawing standards and/or first order or structural analysis techniques. Experience with design to military standards Strong technical background with high technical aptitude Strong leadership skills and project management, sub contract management experience Experience with CREO (Pro/E) or similar 3D solid modeling software Cognizant of machine suppliers’ capabilities or have direct experience in a manufacturing and assembly support role for producibility Familiarity with the design and manufacturing processes of CCAs, mechanical/RF components, metal housings, structures, and electronics assemblies Must have a working knowledge of Microsoft Office (Word, Excel, PowerPoint) Very strong verbal and written communications and interpersonal skills when working with team members and customers Advanced degree in Mechanical, Electrical or Aerospace Engineering What We Offer Our 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 eligible. Learn More & Apply Now! 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 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 Termsaa415a4b-8b21-40fc-a65c-70d2b25ca29a