Principal Mechanical Design Engineer
Listed on 2026-07-01
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Engineering
Mechanical Engineer, Systems Engineer, Electronics Engineer, Aerospace / Aviation / Avionics
Principal Mechanical Engineer
At RTX, the world's 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.
Raytheon brings 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. We deliver solutions that help our nation and allies defend freedom and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.
The Radar Mechanical Design Department leads mechanical design, development, and integration of some of the most innovative land-based and shipboard radars in the world. This includes phased array radar systems, electronic modules, pedestals, and power and cooling systems. The department comprises individuals with technical expertise and experience in hardware design, integration, and production support.
We have an opportunity for an experienced Principal Mechanical Engineer to support our radar development programs. This person will be responsible for leading mechanical teams in all phases of our design cycles, from concept development through design, development, building and tests. Key requirements for this position include proven problem-solving skills and experience in hardware design and integration, engineering analysis, and mechanical drawing creation with military hardware.
Individuals will interface and collaborate primarily with other engineering disciplines, as well as operations, systems, quality and program offices.
This Principal Engineer is an on-site role based in Marlborough or Tewksbury, MA.
What You Will Do- Utilize mechanical hardware design experience and knowledge with ruggedized structures, interconnects, electromechanical development, cooling, or array integration of phase array radars/electronics for multiple military programs.
- Develop technical solutions to a wide range of complex problems related to the entire product life cycle including proposal, design, manufacture, integration and test of phase array radars/electronics for multiple military programs.
- Employ transition-to-production practices with the ability to lead a design release into production.
- Provide technical conscience, challenged with making sure the product and process meet appropriate standards and requirements while helping to remove roadblocks.
- Work with minimal direction or supervision, while exercising considerable latitude in determining the technical objectives of the assignment while meeting cost, schedule, quality, and performance requirements for the finished product.
- Lead a small team of mechanical engineers when required.
- Collaborate frequently with cross-functional personnel, on significant technical matters often requiring coordination between organizations.
- 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 in the design of radar architecture or electronics packaging for military or aerospace or commercial applications.
- Experience with GD&T (Geometric Dimensioning & Tolerances).
- Experience with ANSI drawing standards and/or first order or structural analysis techniques.
- Experience with design to military standards.
- Experience with CREO (Pro/E) or similar 3D solid modeling software.
- Cognizant of machine and designing capabilities or have direct experience in manufacturing and assembly support role for producibility.
- Familiarity with the design and manufacturing processes of CCAs, mechanical/RF components, metal housings, structures, and electronics assemblies.
- Working knowledge of Microsoft Office (Word, Excel, PowerPoint).
- Excellent verbal and written communications and interpersonal skills when working with team members and customers.
- Advanced degree in Mechanical, Electrical or Aerospace Engineering.
- A total rewards package that goes above and beyond with compensation; healthcare, wellness, and work/life benefits; career development and recognition programs. Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance and child/adult backup care.
- Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value:
Trust, Respect, Accountability, Collaboration, Innovation, and Safety. - Relocation assistance available.
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