Occupation: Google vice president of search products and user experience
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In recent years, Mayer has become the public face of and gatekeeper for all things Google a radically different and more powerful organization than when she joined in 1999 as the first female engineer. She's played a key role in the development and release of staple Google products like Search, Gmail and Maps, among others. Her next challenge is running the operation to translate search queries into every language, thus enabling Google to search every website on the Internet.