Sheryl Sandberg was Facebook's first high-profile hire, coming to the social-networking site from Google earlier this year. At Facebook, she manages a wide swath of the company's business operations, including sales, marketing, business development, human resources, public policy, privacy and communications. Ms. Sandberg was vice president of global online sales and operations at Google, where she built and managed the online sales channels for advertising and publishing and operations for consumer products globally. She was also instrumental in launching Google's philanthropic arm. Ms. Sandberg was previously chief of staff for the United States Treasury Department under President Bill Clinton. She was also a management consultant with McKinsey & Company and an economist with the World Bank. She holds an MBA from the Harvard Business School and was also an undergraduate at Harvard.