Responsible Engineering Authority - Optical Assembly

Date Posted:

2026-04-24

Country:

United States of America

Location:

US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​

Security Clearance Type:

TS/SCI without Polygraph

Security Clearance Status:

Active and existing security clearance required on day 1

At RTX, the world 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. 

At Raytheon, we are seeking a Senior Principal Mechanical Engineer to serve as a Responsible Engineering Authority (REA) leading the build, integration, and execution of a critical-path opto-mechanical subassembly for a high-visibility program.  This is a hands-on role for an engineer who thrives in the lab, leads from the front, and has a track record of delivering complex hardware under demanding technical, schedule, and customer-driven environments. 

 

What You Will Do 

• Lead a cross-functional team in the daily build, assembly, and integration of complex opto-mechanical hardware supporting a critical-path subassembly.  

• Drive execution across engineering, planning, quality, manufacturing, and program teams to meet technical, cost, and schedule objectives.  

• Coordinate and manage external suppliers and long-lead hardware, ensuring timely delivery and compliance with system requirements. 

• Oversee hands-on lab integration activities, troubleshooting issues and driving resolution during hardware build and assembly.  

• Lead daily execution planning (stand-ups) and communicate progress, risks, and recovery plans to program leadership.  

• Chair and drive Failure Review Boards (FRBs), non-conformances, and corrective action efforts to ensure successful hardware delivery.  

• Ensure hardware meets requirements through integration, test, and verification activities across the program lifecycle.  

• Support domestic travel (~20%) to supplier and program locations as needed.  

 

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. 

• Experience leading cross-functional hardware build, integration, or assembly efforts for complex engineering systems.  

• Experience working with opto-mechanical, electro-optical, or complex sensor hardware across the engineering lifecycle (design, procurement, build, integration, test, and delivery).  

• Experience managing complex hard