John LeRoy Hennessy founded Qualcomm Atheros, Inc. and MIPS Technologies, Inc. Presently, he occupies the position of Chairman for Alphabet, Inc.

He is also on the board of Gordon & Betty Moore Foundation and Chan Zuckerberg Biohub and Member of National Academy of Engineering and Member of National Academy of Sciences.

He previously held the position of Chairman for Qualcomm Atheros, Inc., President for Stanford University and Dean at Stanford University School of Engineering.

John LeRoy Hennessy received a doctorate and a graduate degree from Stony Brook University and an undergraduate degree from Villanova University.