The Principal Mechanical Engineer applies engineering techniques to design, install, modify, analyze, repair and test tools, engines, machines and other mechanically functioning equipment. In this role, The Sr. Staff Mechanical Engineer leads in the mechanical design, testing, and production of electrical machines as well as the design of electronics packaging for high altitude aerospace applications. One leads the mechanical packaging development effort for electronic equipment that withstand stringent environmental requirements (i.e., mass, volume, thermal, vibration). Manages mid-size development projects outsourced to sub-contractors (development of a system, equipment or components).