15. Walter Denk
Avaya in February named Walter Denk as its new channel leader, placing him in charge of plans to enhance partner programs and channel support following the company's Chapter 11 bankruptcy filing in January.
Denk has been working at the Santa Clara, Calif.-based company for five years, serving as Avaya's SMB business group vice president in Germany.
Before joining Avaya in 2012, Denk held positions in sales and marketing at Deutsche Telekom, IBM and PricewaterhouseCoopers.