1.As a teenager，Bezos started working behind the grill at McDonald’s during the summer.His dad had also worked at McDonald’s in the past.Bezos thinks the most challenging thing is keeping everything going at the right pace during a rush. 2.The tech billionaire got his start in the restaurant business.At the age of 12，Dell worked at a Chinese restaurant washing dishes.After he left the Chinese restaurant，Dell worked at a Mexican restaurant.