Senior Mechanical Design Engineer

Date Posted:2026-06-16 Country:United States of America Location:US-MA-MARLBOROUGH-MA1 ~ 1001 Boston Post Rd ~ BLDG1 Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements:The ability to obtain and maintain a U.S. government‑issued security clearance is required. 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 after day1 What You Will Do Develop innovative technical solutions to a wide range of complex challenges spanning the entire product lifecycle, including proposal, advanced development, design, cooling, manufacturing, integration, and testing of radars, support equipment and electronics for military programs. Perform tolerance analyses to ensure form, fit, and function are as intended by design for the use‑application. Lead small teams utilizing strong mechanical hardware design experience and knowledge in a fast‑paced collaborative environment with ruggedized structures, interconnects, cooling, electronics packaging, tooling and/or array integration. Provide support for product integration and efforts in both domestic and international factories and supplier locations to assess requirements compliancy. Teaming / Communication Collaborate with cross‑functional teams including other engineering disciplines, operations, supply chain, quality, and external suppliers to resolve technical challenges and develop effective design solutions. Independently manage tasks and deliver on schedule, budget, and technical goals. Participate in design reviews and conduct trade studies to support informed, sound engineering decisions. Mentor and guide less experienced engineers, contributing to team development and technical growth. Qualifications You Must Have Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience or an Advanced Degree in a related field and minimum 3 years experience. Experience in the creation, review and interpretation of technical documentation utilized in the development or production of hardware or tooling products. Experience in mechanical design, advanced design development, manufacturing or tooling processes, or related areas. Experience in the development, creation, release, or updates of engineering drawings utilizing a 3D CAD design tool. Qualifications We Prefer Proven mechanical design ability in a production or advanced development environment. Experience in design, fabrication, or integration of Electronics Packaging, design and development of Electronic Systems, including interconnects, power distribution, cooling, RF or tooling products. Technical Data Package creation, change notice processing including communication of required functional and performance requirements. Experience using CREO CAD design and documentation tools or similar 3D solid modeling software with a configuration and data management environment. Experience in Geometric Dimensioning and Tolerancing. Experience with cost and/or schedule reporting or proposal development. Highly detail‑oriented with a demonstrated ability to work effectively within cross‑functional teams. Familiarity with Military and/or Commercial Specifications and requirements. Willingness to travel (domestic and international). Advanced degree in mechanical engineering, aerospace hardware systems design. 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. Work Schedule:9/80 schedule (every other Friday off). Relocation Eligible – relocation assistance is available for this position. Salary and Benefits Salary range for this role is 86,800USD – 165,200USD. The salary range provided is a good faith estimate representative of all experience levels. 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. Equal Opportunity Employer 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 Section503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act. #J-18808-Ljbffr