John Roberts

John Roberts is a Principal Engineer in Propulsion at Sierra Space, with experience that spans over 15 years in various engineering roles. Key positions include serving as a Certification Examiner for PSIA-AASI and holding graduate research assistant roles at the University of Wisconsin-Madison and Northern Illinois University. Previous engineering positions include Product Design Engineer at SKF and intern roles at Caterpillar Inc., Testors Corporation, SPX Corporation, and C. Roberts Consulting Engineers. John holds a PhD in Mechanical Engineering with a focus on Combustion from the University of Wisconsin-Madison, along with a Master of Science and a Bachelor of Science in Mechanical Engineering from Northern Illinois University.