Principal Mechanical Engineer (Onsite)

3M HEALTHCARE; El Segundo (CA); On-site; USD 118,300 - 224,900; Full time

Job summary

Collins Aerospace in El Segundo, CA is seeking a Principal Mechanical Engineer to lead mechanical development of GPS RF and digital electronics subsystems from concept through production. You will act as mechanical technical authority on programs, ensuring alignment to cost and schedule while owning subsystem-level mechanical solutions for demanding thermal and high‑vibration environments.

Collaborate with Electrical, Systems, Manufacturing and Supply Chain teams, mentor junior engineers, and

Qualifications

• Degree in STEM with 8+ years of relevant experience, or an advanced degree with 5+ years.
• Ability to obtain and maintain a U.S. security clearance.
• Experience designing electronics packaging for GPS/military applications.

Responsibilities

• Lead mechanical development of GPS RF and digital electronics subsystems from concept through production.
• Serve as the mechanical technical authority (REA) on programs, ensuring alignment to technical, cost, and schedule objectives.
• Own subsystem-level mechanical solutions, ensuring performance in demanding thermal and high‑vibration environments.
• Collaborate cross‑functionally with Electrical, Systems, Manufacturing, and Supply Chain teams to deliver integrated hardware solutions.
• Represent the mechanical discipline in design reviews and customer engagements.
• Mentor and provide technical guidance to junior engineers across the matrixed team.
• Support hardware integration, verification, and production readiness activities within secure program environments.

Skills

GD&T

High‑reliability design

Cross-functional collaboration

Education

Bachelor's degree in STEM

Tools

Creo/Pro/Engineer

ASME drawing standards

3D CAD

Job description

Job Title: Principal Mechanical Engineer

Location: El Segundo, CA. Company: Collins Aerospace (Raytheon).

Security Clearance: U.S. citizenship required. Eligible to obtain and maintain a DoD Secret clearance. Security clearance status: Active and existing clearance required after day 1.

Salary Range: $118,300 – $224,900 USD.

What You Will Do

• Lead the mechanical development of GPS RF and digital electronics subsystems from concept through production.
• Serve as the mechanical technical authority (REA) on assigned programs, ensuring alignment to technical, cost, and schedule objectives.
• Own subsystem-level mechanical solutions, ensuring performance in demanding thermal and high‑vibration environments.
• Collaborate cross‑functionally with Electrical, Systems, Manufacturing, and Supply Chain teams to deliver integrated hardware solutions.
• Represent the mechanical discipline in internal and external design reviews and customer engagements.
• Mentor and provide technical guidance to junior engineers across the matrixed team.
• Support hardware integration, verification, and production readiness activities within secure program environments.

Qualifications

• 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.
• Ability to obtain and maintain a U.S. government issued security clearance.
• Experience designing and developing electronics packaging solutions for high‑reliability GPS receivers or related military applications.
• Experience applying Geometric Dimension Tolerance (GD&T) and American Society of Mechanical Engineers (ASME) drawing standards to production hardware.
• Experience with 3D solid modeling tools (Creo/Pro/Engineer or similar) for mechanical design and documentation.