James Braithwaite, Euro-Pro vice president of research and development, says Shark had to "over-engineer" the device's head, which holds the floor cleaning pads, so it would stand up to consumer pressure.

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The company utilizes engineer-to-engineer selling model, which is a fairly research and development intensive process, according to Crichton.

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The Seattle programmer was Facebook's only full-time engineer working on its development along with Skype, a Facebook spokeswoman said.

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David "Dadi" Perlmutter, the 53-year-old Israeli engineer who ran the Core team, is now in charge of the sprawling microprocessor giant's product development decisions--that is, figuring out which chips will one day replace the Core.

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