Western Alliance Bank Overview. Website: beatsbydre.usnalliancebancorporation.com; Headquarters: Phoenix, AZ. Size: to Employees. Founded. 53 reviews from Western Alliance Bank employees about Western Alliance Bank culture, Director (SVP) (Current Employee) - Phoenix, AZ - August 8, Find company research, competitor information, contact details & financial data for Western Alliance Bancorporation of Phoenix, AZ. Get the latest business.