Date Posted: 2025 09 13 Country: United States of America Location: MA131: Tewksbury, MA Bldg 1 Assabet 50 Apple Hill Drive Assabet Building 1, Tewksbury, MA, 01876 USA 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: DoD Clearance: Secret Department Overview: The Air Defense Ground Equipment Mechanical Design Department is responsible for the mechanical design, development, and integration of critical defense platform systems. This includes radar and communications shelters, electronic subsystems, launchers, hardware integration, and system interconnects. We are currently seeking a motivated and driven Principal Mechanical Engineer to join our Ground Equipment Design Team. The ideal candidate will bring a blend of technical expertise, mechanical hardware design experience, system integration skills, and a strong background in program execution and production support. Role is an On Site role in Tewksbury or Andover, MA Key Responsibilities: Perform mechanical design, development, and documentation of components, subassemblies, and major end items for defense systems, aligned with system requirements. Oversee small to mid sized cross functional engineering teams as the technical execution lead across all phasesâ from proposal generation and program initiation through design and into production. Serve as the technical focal point for mechanical or cross functional teams within an Integrated Product Team (IPT) environment. Provide support for product integration with domestic and international factories and suppliers. Collaborate with engineering and non engineering disciplines, and suppliers, to resolve technical challenges and develop robust design solutions. Work independently with minimal supervision while ensuring schedule, cost, and technical commitments are met. Support and participate in design peer reviews, and conduct trade studies to enable sound technical decision making. Apply mechanical engineering knowledge to solve problems and support hardware development in a fast paced, team oriented environment. Mentor and guide junior engineers, fostering growth and knowledge sharing within the team. Required Skills: Minimum of 8 years of experience in Mechanical Engineering, including at least 3 years of hands on design and development of mechanical equipment (preferably in military or defense environments). Proven experience spanning concept development, detailed design, transition to production, and sustainment. Strong background in mechanical design, material selection, and manufacturing processes. Proficiency in CAD design tools, specifically Pro/ENGINEER (ProE) and CREO, including Large Assembly Management. Familiarity with Product Data Management (PDM) systems: part structures, CNs (Change Notices), PRECOs (Preliminary Engineering Change Orders), and initial releases. Demonstrated creative problem solving capabilities. Desired Skills: Master of Science in Mechanical Engineering or equivalent years of experience in a related role or discipline. Excellent communication, technical writing, presentation, and interpersonal skills. Working knowledge of Military and Commercial Specifications. Experience with: Design and integration of electronic and shelter assemblies Power distribution equipment packaging Rack system integration Troubleshooting electromechanical systems Interconnects, Cables, and Harness systems CNC machined components and welded assembly design ASME Y14.5 Geometric Dimensioning & Tolerancing (GD&T) proficiency. Experience with structural design and analysis. Strong skills in mechanical CAD modeling and drafting. Understanding of manufacturing systems and electromechanical production environments. Experience working within an Integrated Product Team, collaborating across Engineering, Operations, Supply Chain, and Quality teams. Ability to work effectively under pressure, meet deadlines, and manage priorities with minimal conflict. Flexibility and willingness to adapt to varied and evolving assignments. Strong team leadership and collaboration skills. Prior experience managing engineering risk and opportunity, as well as contributing to or leading proposal efforts. Earned Value Management (EVM) and Estimate at Completion (EAC) experience. Active or prior Secret Clearance is a plus. Required Education: Bachelor of Science (BS) in Mechanical Engineering or a related technical field. The salary range for this role is 101,000 USD 203,000 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 RTX 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 â Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 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, Virginia.