Senior Principal Mechanical Engineer (Onsite)

Date Posted: 2026-07-16
Location: Goleta, CA (Onsite)
U.S. citizenship is required to obtain and maintain a DoD Secret security clearance; an active and existing clearance is required after day 1.

About the Role

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.

Responsibilities

• 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.

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 a minimum of 7 years of experience.
• Experience in electronics packaging for high-reliability environments and 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/ProEngineer or similar for mechanical design and documentation.

Qualifications We Prefer

• Experience in leadership in mechanical design and development of defense-related electronic systems, including subsystem lead/REA/IPTL or similar technical authority experience.
• Experience across the full engineering lifecycle: bidding, design, implementation, delivery.
• Experience in earned value management (EVMS) and associated engineering tracking and metrics.
• Background in Electronic Warfare, radar, RF subsystems, or airborne electronics.
• Thermal and structural analysis experience using FEA tools.
• Knowledge of CCA/PCB integration, cabling/harness design, and RF isolation.
• Experience conducting PDR/CDR/TRR reviews and presenting technical data to customers.
• Proposal development experience, including BOEs and technical volumes.
• Experience in root cause analysis and corrective actions within production environments.
• Knowledge of parts management and materials/process engineering.
• Success working in fast-paced, dynamic product development environments.

Benefits

• Medical, dental, and vision insurance
• Life insurance, short-term disability, and 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
• Annual short-term and/or long-term incentive compensation programs (eligibility dependent on role level and collective-bargaining agreement status)

Pay

The salary range for this role is $145,600 – $276,800 USD. The 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.

Relocation

This position is relocation eligible.