
This onsite Senior Principal Mechanical Engineering 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 security clearance to perform detailed structural analyses using finite element methods and to develop test plans for validating hardware compliance. Key responsibilities include analyzing complex material behaviors, leading technical peer reviews, generating archival reports, and acting as a subject matter expert to define departmental processes. The role appeals to engineers seeking to solve meaningful, high-stakes problems that contribute to national security while working within a culture that values safety, innovation, and collaboration. Candidates will engage with internal teams and external government stakeholders, with occasional travel required to test sites.







