David Zwick has been appointed chief financial officer and executive vice president of Inteliquent. He first joined the company in August 2011 as senior vice president of business development, where he was responsible for corporate strategy, mergers and acquisitions, business development and strategic alliances. Previously, Zwick was a senior investment banker in the global communications and media group at Lehman Brothers and Barclays Capital for 13 years. Zwick started his career at Arthur Andersen & Co. He has a Bachelor's degree from the University of Illinois and an MBA from Northwestern University's J.L. Kellogg School of Management.