Guilherme Soster is a screenwriter, director and film producer. He began his career in 2008, producing a series of electronic songs that soundtracks for award-winning films and video art pieces. His first film as director and screenwriter was "Ruby" (2015), which received 13 awards at festivals and has been shown in France, Belgium, Portugal, the UK, Colombia, Taiwan and in all the states of Brazil, as well as being broadcast several times on two television channels.