Marissa, all of 37 years old(!), was one of the first 20 employees - and the first female engineer - at Google. She has been listed by Forbes on four occasions as one of America's 50 most powerful women in business.
In addition to her professional achievements, Marissa holds two degrees from Stanford, is a keen dancer and runner and has climbed Mt. Kilimanjaro.
Her appointment came as a shock to some, as on the same day it was announced, Marissa announced that she is six months pregnant.
Marissa is clearly a remarkable woman, having achieved so much professionally while still being young and family-oriented. She married Zach Bogue in 2009 and they are expecting a baby boy in October.