Senior Principal Mechanical Engineer; Onsite

Senior 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.

As a Senior Principal Mechanical Engineer in the Electronic Warfare Mechanical Design Hardware Department, you will lead the design and development of airborne RF and digital processor subsystems from early concept through production deployment. This role requires deep expertise in electronics packaging, thermal and structural analysis, manufacturing processes, and high reliability hardware development.

What You Will Do

• Lead mechanical design and development of airborne RF and digital electronics subsystems from concept to production.
• Serve as the mechanical technical authority (REA/IPTL) to ensure alignment with technical, cost, and schedule objectives.
• Communicate technical status and risks to executive leadership; present at internal and customer design reviews.
• Develop requirements, design documentation, trade studies, verification plans, test artifacts, and technical presentations.
• Own subsystem level mechanical solutions capable of meeting demanding thermal, structural, and vibration requirements.
• Collaborate with cross functional teams in Electrical, Systems, Manufacturing, and Supply Chain to deliver integrated hardware.
• Mentor junior engineers and provide technical guidance across the matrixed team.
• Support hardware integration, verification, and production readiness activities within secure program environments.
• Contribute to proposal efforts, including cost estimates and technical volume content.
• Occasional travel (10–20%) to Raytheon facilities, suppliers, or customer sites is expected.

Qualifications You Must Have

• 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.
• Experience in electronics packaging for high reliability environments and in supporting hardware through environmental qualifications (vibration, shock, thermal).
• Working knowledge of electronics/processor systems design and development utilizing COTS/MOTS components and products.
• Experience with GD&T and ASME drawing standards appropriate for production level hardware.
• Experience with 3D solid modeling tools such as Creo/Pro Engineer or similar for mechanical design and documentation.

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.
• This position is relocation eligible.