Jobs brought Tim Cook on board in 1998 to oversee the manufacturing of Apple’s computers.
The Alabama native is an industrial engineer by training, and also earned a master’s degree in business administration from Duke University. Before joining Apple, Cook worked at IBM and at Compaq, the computer company now owned by Hewlett-Packard.
Cook also filled in for Jobs for two months in 2004, when Jobs recuperated from surgery to remove a cancerous tumor from his pancreas. Jobs later turned over to Cook responsibility for Apple’s worldwide sale and its Mac computer division. He was appointed chief operating officer of Apple in 2005, and stepped in for Jobs again in 2009 when the Apple CEO took a medical leave.
