Apple has expanded the ranks of its senior executive team by promoting Jeff Williams from vice president of operations to senior vice president of operations. “Jeff Williams is Apple’s senior vice president of Operations, reporting to COO Tim Cook,” reads his Apple bio page. “Jeff leads a team of people around the world responsible for end-to-end supply chain management and dedicated to ensuring that Apple products meet the highest standards of quality.” Williams worked at IBM from 1985 until he joined Apple in 1998, initially taking on the role of head of worldwide procurement. He was named vice president of operations in 2004, and has led worldwide operations for the iPod and iPhone since the latter’s launch in 2007. Mac Rumors notes that Williams appears to have taken the position on or before July 7, and that Williams’ holdings in Apple stock and options are worth over $41 million at current prices, although not all of the options and grants have yet been vested or exercised.