2026 ADGE Sr Principal Mech Engineer - On Site

RTX • Tewksbury, MA

5d • Onsite

About The Position

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. 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 What You Will Do Lead execution of major programs and mid- to large-scale cross-functional engineering teams across all development phases Serve as SME and technical liaison to programs/IPTs, ensuring stakeholder alignment Oversee technical performance of design teams and provide lifecycle engineering guidance Lead proposal efforts, EAC activities, and manage schedule, cost, and technical commitments Drive TDP development, peer reviews, and hardware engineering process improvements Perform complex mechanical design, development, and documentation for defense systems Support product integration with domestic/international factories and suppliers Collaborate with multidisciplinary teams, Chief Engineers, and suppliers to deliver robust, production-ready solutions

Requirements

• 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.
• Mechanical equipment design and development experience, preferably in defense/military environments
• Proven engineering team leadership with accountability for cost, schedule, and technical performance; project budgeting and scheduling experience
• Prior Experience collaborating within Integrated Product Teams (IPTs) and cross-functional organizations, including customer engagement
• Experience with hands-on mechanical design, from trade studies and concept development through production transition and supplier support
• Experience conducting RCCA, driving cost reduction initiatives, and producing technical documentation/white papers
• Broad expertise in mechanical design, materials, manufacturing processes, CAD, and PDM systems
• The ability to travel domestically and internationally
• 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 Status: Active and existing security clearance required after day 1

Nice To Haves

• Advanced degree in Mechanical Engineering or related hardware systems field
• Electronic packaging design experience (subsystems, modules, CCAs, PWBs, interconnects for RF/digital/power)
• Design, fabrication, and integration of electronic assemblies, shelters, racks, and PDUs
• Knowledge of military/commercial specifications and ASME Y14.5 GD&T
• Experience with ECAD processes, interconnects, cables/harnesses, and material selection/finishes
• Proficiency in Creo CAD, Windchill PDM (or similar), and configuration/change management
• Skilled in Microsoft Office with strong communication and technical writing abilities
• Self-driven team player able to manage multiple priorities and travel as needed

Responsibilities

• Lead execution of major programs and mid- to large-scale cross-functional engineering teams across all development phases
• Serve as SME and technical liaison to programs/IPTs, ensuring stakeholder alignment
• Oversee technical performance of design teams and provide lifecycle engineering guidance
• Lead proposal efforts, EAC activities, and manage schedule, cost, and technical commitments
• Drive TDP development, peer reviews, and hardware engineering process improvements
• Perform complex mechanical design, development, and documentation for defense systems
• Support product integration with domestic/international factories and suppliers
• Collaborate with multidisciplinary teams, Chief Engineers, and suppliers to deliver robust, production-ready solutions

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