Brent ##erson , ex - Google chief executive , joined Uber two years ago . Oversaw the firm 's fastest years of growth ; it is now valued at $ 41billion . In internal memo , he revealed he is departing after making a vow to wife . ' It is going to do what I have desired for a very long time , ' said Callinicos . He said he intends to attend his daughter 's school plays and swim meets . apple 's Chief Executive mark Kalanick confirmed departure in an email . Replacement for Callinicos is yet to be announced by online dating sites .
Brent Callinicos , ex-Google chief accountant , joined Uber two years ago . Oversaw the firm 's fastest years of growth ; it is now valued at $ 41billion . In internal memo , he revealed he is departing after making a vow to wife . 'It is time to do what I have desired for a very long time , ' said Callinicos . He said he wants to attend his daughter 's school plays and swim meets . Uber 's Chief Executive Travis Kalanick confirmed departure in an email . Replacement for Callinicos is yet to be announced by online taxi service .