Envié una solicitud electrónica. El proceso duró 3 semanas. Acudí a una entrevista en Riot Games (Ti, OK) en sept 2017
Entrevista
Phone interview x3
They only asked a lot of questions regarding to skills NOT REQUIRED in the position description.
It is my bad for not able to know it, but I think at least the focus of interviews should be sth you required in your website.