5. Joe Vitalone
Vitalone returned to ShoreTel in May 2012 as the vice president of channel management, after a three-year stint in Americas sales at LifeSize. But, he left again in March for ShoreTel's rival Mitel. The two unified communication solution providers have long competed over the business software and virtualization markets. Due to the conflict, Vitalone's resignation was effective immediately, and Chuck Krogman was named interim vice president. Vitalone is now the executive vice president of sales in the Americas at Mitel and reports to the company's President and CEO Richard McBee, according to a Mitel press release.
Richie Bell, president of IPRO Media, a Texas-based Mitel partner, worked with Vitalone in the 1980s during his first stint at Mitel. "He's an experienced industry guy that understands what needs to be done [and] works very diligently to understand that process," he said. "We've seen a higher level of energy on the sales side and I think that's a trait that will carry on because that's just what he brings."