Gay is a director and screenwriter, born in 1967 in Barcelona, Spain. He made his debut co-directing the feature film Hotel Room (1998), for which he wrote the screenplay, with Daniel Gimelberg. After that, he was one of the screenwriters and directors of the TV series Polar (1999). He directed the acclaimed feature film Nico and Dani (Krámpack, 2000), the drama In the City (2003), Fiction (Ficció, 2006) and the comedy V.O.S. (2009).