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Apple software legend Bertrand Serlet has left the company after 22-years serving under Steve Jobs. The French-born senior VP of software engineering is best known for developing the Mac OS X operating system. "I've worked with Steve for 22 years and have had an incredible time developing products at both NeXT and Apple, but at this point, I want to focus less on products and more on science," he said in a company press release. It's rumored that his departure is due to Mac OS X being overshadowed by the company's mobile operating system but that's pure speculation at this point. Here's a timeline of his achievements:

  • ┬áIn 1989, Serlet joined NeXT, the computer company Jobs founded after he left Apple in 1985. There he developed the workspace manager in NeXTSTEP and OPENSTEP. The software Serlet worked on at NeXT would eventually be bought by Apple along with the company for $429 million in cash in 1996.
  • Upon joining Apple, he helped transfer the NeXT operating system software to Mac OS X, which was the main purpose of the NeXT acquisition.
  • In 2003, he took over as head of software engineering at Apple.
  • In 2006, he endeared himself to Apple fanboys after openly mocking Windows Vista and accusing Microsoft of copying its software at the WWDC conference. Here's Serlet swaggering on stage with his thick French accent:

  • Serlet later led the development of Apple's widely-praised releases of Mac OS X Tiger, Leopard and Snow Leopard.

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