We are seeking a Principal Engineer in Manufacturing Engineering to lead the design, planning, and development of manufacturing processes and equipment for aerospace applications. The role involves creating assembly layouts, adapting machine designs, developing process sequences, and applying statistical process control and continuous improvement techniques. Candidates must have a relevant engineering degree, extensive experience with CATIA V5, NC programming, tool design, and process optimization (Six Sigma Green Belt). The position is based in Chula Vista, CA, with a salary range of $142,147 to $224,000 annually, and offers comprehensive benefits. This onsite role requires U.S. work authorization and involves contributions to advanced aerospace structures, ensuring safety, efficiency, and innovation in aircraft manufacturing. The application window is approximately 40 days, and RTX is an Equal Opportunity Employer.