2026 ADGE Principal Mechanical Engineer – On-Site

RTX • Tewksbury, MA

5d • Onsite

About The Position

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. 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. Role is an On-Site role in Tewksbury, MA/Andover, MA

Requirements

• 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.
• Experience spanning concept development, detailed design, transition to production, and sustainment.
• Experience in mechanical design, material selection, and mfg processes.
• Experience in CAD design tools, ProE and CREO, including Large Assembly Management.
• Experience with Product Data Management (PDM) systems
• 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
• Active and existing security clearance required after day 1

Nice To Haves

• Advanced degree in Mechanical Engineering or related hardware systems field
• Design and integration of electronic/shelter assemblies and power distribution equipment
• Troubleshooting electromechanical systems
• Experience with interconnects, cables, harnesses, and CNC
• Proficiency in ASME Y14.5 GD&T
• Structural design and analysis experience
• Understanding of manufacturing systems and electromechanical production environments
• Experience in cross-functional IPT collaboration and engineering risk/proposal management
• Familiarity with EVM/EAC and willingness to travel (~10%)

Responsibilities

• Perform ME design, development, and documentation of components, subassemblies, and major end items
• Oversee small to mid-sized cross-functional engineering teams as the technical execution lead across all phases—from proposal generation and program initiation
• Serve as the technical focal point for mechanical or cross-functional teams
• 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
• 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
• Apply ME knowledge to solve problems in a fast-paced, team-oriented environment.
• Mentor and guide junior engineers, fostering growth and knowledge sharing within the team.

Benefits

• 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.
• 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.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 5,001-10,000 employees