A quick look at some of the movement among IT people this week. People Moves IconLooking toward becoming a shopping destination, Twitter hired former Ticketmaster President Nathan Hubbard as its first-ever Chief of Commerce. According to Hubbard, his role will be to “go to people who have stuff to sell and help them use Twitter to sell it more effectively.” [Dice News] Greylock, a venture capital firm, promoted another member of its team to Principle. This time, it was Simon Rothman, formerly an executive in residence at the company and the Founder of eBay Motors and Glyde. Rothman will serve on Greylock’s consumer investment team, managing marketplace entrepreneurs and companies. [TechCrunch] Microsoft promoted Phil Sorgen, a 17-year veteran of the company, to Corporate Vice President of its Worldwide Partner Group. Most recently, he was Corporate Vice President for the U.S. division of the Small and Mid-market Solutions and Partners business. He replaces Jon Roskill, who served as Channel Chief for three years. [MarketWatch] Jeff Benforte transitioned to the role of Senior Vice President of Communication Products at Yahoo. Previously, he was the CEO of Xobni, a maker of address book apps and plugins that Yahoo bought in July. Benforte will be responsible for Yahoo Mail, Messenger, Groups, Contacts and Calendar. [AllThingsD] Hugo Barra resigned from his position as Vice President of Product Management for Android at Google. He has accepted a position as Vice President of Global Operations for Xioami in China. [CNET] Spotify hired Jorge Espinel as Head of Global Business Development. Previously, he worked on digital strategy at News Corp and 21st Century Fox. [AllThingsD] Marko Ahtisaari resigned from his position as Executive Vice President of Design for Nokia to “pursue entrepreneurial opportunities.” He will be replaced by Stefan Pennenbecker. [AllThingsD] Catastrophe modeling firm RMS appointed Alex Barnett to be Vice President of Developer Relations. He brings more than 15 years of experience in developer leadership roles, most recently as Group Manager of Developer Relations at Intuit. [RMS] Do you know of people moving to new jobs inside, or outside, your company? Let us know by emailing tips@dice.com.