David Zierman is an Account Director in the Telecom Practice at J.D. Power. He is responsible for all aspects of account management and research consulting associated with wireline business in the United States. He works directly with providers of residential and business telephone as well as Internet and cable television services to help them ensure customer focus. He also works with mobile device manufacturers by providing insight as to how the Voice of the Customer (VoC) influences the highly competitive tablet and smartphone market. His expertise is in helping companies understand and operationalize customer data.

Prior to joining J.D. Power in 2015, Mr. Zierman spent many years assisting enterprise organizations while working for well-established market insight service providers. He has an extensive background in customer-related research in the telecommunications, technology and retail industries. Most recently, he ran a research department for Daymon World Wide, one of the world’s largest retail services companies. Previously, he held positions as a global account manager, providing services to two separate Fortune 50 companies.

Mr. Zierman received a bachelor’s degree from the University of Washington in communications and an MBA from the University of Oregon.