Yossi Langer Yossi Langer runs UX and product strategy consultancy Eastside. He has been solving user experience design, usability, and human factors problems for mobile and web applications for nearly 20 years. He was principal of Iteration Group from February 2013 to January 2017, where he ran all research, discovery, design, and management for more than 40 redesign projects.
Yossi previously led product and user-experience teams at Viacom, Fotolog, American Express, and AOL. At Viacom, Yossi created the Lean Testing Lab, which enabled the company to cost-effectively conduct user experience research and iterate on designs for dozens of products.