
This onsite Senior Principal Mechanical Engineer role within the Mechanical Analysis and Test Department at Raytheon focuses on structural and thermal design for defense weapon systems. The position requires a U.S. citizen with an active Secret security clearance to perform detailed structural analyses using finite element software and to develop test plans for validating hardware compliance. Key responsibilities include analyzing complex material behaviors, leading technical peer reviews, acting as a subject matter expert for department processes, and presenting results to government stakeholders. The role appeals to engineers seeking to solve meaningful, high-stakes problems that contribute to national security while working within a culture that prioritizes safety, innovation, and collaboration.













