Yahoo! Inc Chief Executive Officer Carol Bartz has commissioned searches for several high-level executives amid a management shuffle at the Internet company, a person familiar with the matter said.

The reorganization would be Bartz's first significant shakeup to bolster Yahoo's position in the online advertising market after she took over as CEO from co-founder Jerry Yang last month.

Yahoo is seeking new ways to revive growth under Bartz, the former CEO of Autodesk Inc. Yahoo faces a slowdown in the online advertising market at the same time as Google steps up competition in areas such as graphical-display ads. Microsoft Corp is also going after Yahoo's employees, hiring at least three Internet-search executives since November.