Guillermo Ermel is User Research Technical Leader at MercadoLibre.com, Latin America's leading e-commerce marketplace.

With more than 10 years of experience on the user research field and 20 in interaction design, he has vast experience creatively combining user research methods and tools to help multidisciplinary teams achieve their goals.

He facilitated over 2000 one-on-one user testing sessions and interviews, helping hundreds of projects to focus on real users.

Since 2007, he's been a Speaker and workshop coach at the most relevant south american UX events, such as UX2013 and World Usability Day Buenos Aires.