Senior Principal Mechanical Engineer

Date Posted: 2026-07-16 Country: United States of America Location: US-AZ-TUCSON-807A ~ 1151 E Hermans Rd ~ BLDG 807A 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: Active and existing security clearance required on day 1 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 Advanced Airframes Department within Raytheon Hardware Engineering provides Mechanical Engineering support to develop solutions for products across the Raytheon portfolio. Our core mechanical engineering responsibilities include requirements/conceptual development, design, integration, and test support. We partner with several Mechanical Product Team departments to provide full system solutions. The Advanced Airframes Department is seeking a highly qualified and experienced Senior Principal Mechanical Engineer to support an integration and demonstration initiative. The ideal candidate will possess expertise in mechanical design, team leadership, Earned Value Management, hardware design, integration, testing, and qualification. You will lead the mechanical engineering aspects of the program, providing technical guidance and oversight to ensure project commitments are successfully achieved. Additionally, the selected candidate will manage supplier relationships and may also lead efforts related to proposal development. What You Will Do * Provide leadership to teams of engineers in the architecture, design, development, integration, and testing of mechanical hardware for a high-priority advanced development program. * Operate independently with minimal supervision, demonstrating strong project leadership capabilities, including delegating tasks effectively and reviewing the work of team members to ensure quality and alignment with program goals. * Oversee the Earned Value Management System (EVMS) and serve as the Cost Account Manager (CAM) for multiple accounts across various contracts. * Proactively manage mechanical risks and identify opportunities to optimize performance across multiple contracts. * Lead and support failure investigations and resolution of hardware anomalies as required, ensuring timely and effective problem-solving. * Regularly communicate program status, progress, and resource needs to program leadership, functional leadership, and government customers to ensure alignment and transparency. * Primarily operate within an office environment, with occasional travel to labs, supplier locations, or field sites as necessary. * Collaborate effectively with higher-level functional and program management to align objectives and achieve program milestones. * Foster strong working relationships and collaboration with customers and suppliers to ensure successful program execution. Qualifications You Must Have * Typically requires a degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 10 years of prior relevant experience or An Advanced Degree in a related field and minimum 7 years experience * 10 years of experience in one or more of the following areas: Mechanical product and subassembly design, integration, and production support * A minimum of 1 year of experience in Earned Value Management (EVMS) and Cost Account Management (CAM) of full EVM (IMS baselining, Baseline Change Requests, Variance Narratives, etc.) Qualifications We Prefer

• Advanced degree in Mechanical Engineering or Aerospace Engineering.
• Over 10 years of professional experience in the design, development, and

testing of hardware for defense-related components or systems. * A minimum of 2 years of experience serving as a Control Account Manager

(CAM).

* Expertise in Geometric Dimensioning and Tolerancing (GD&T), including advanced knowledge of mechanical hardware drawing practices and interpretation. * Demonstrated experience in proposal development, including authoring Basis of Estimates (BOEs) and contributing material estimating inputs.

• Proven experience in supplier management and collaboration.
• A highly motivated self-starter with the ability to excel in

multidisciplinary roles. * Strong networking and influencing skills to engage effectively with cross-functional teams, program leadership, engineering disciplines, production support organizations, and manufacturing teams. * Excellent interpersonal skills with the ability to foster positive relationships with peers, suppliers, management, and customers in production environments. * Relevant experience working with missiles or similar systems, particularly within Alternative Missions and Space environments. * Demonstrated success in leading teams, managing resources (including cost, personnel, and schedules), delegating tasks, and ensuring accountability. * Strong communication skills, both written and verbal, with a track record of collaborating effectively to document design decisions, conduct trade studies, and present findings to program leadership and customers through reports and presentations. * Proven ability to lead cross-disciplinary teams by fostering trust, respect, and innovation to achieve results aligned with a shared vision. What We Offer * Our 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 Eligibility Learn More & Apply Now! * Please consider the following role type definition as you apply for this role. * 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 132,400 USD - 251,600 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