Olifiers's last position in Brazil was as Head of Games at Globo TV. There he developed around 30 web-based games, some of them multiplayer, such as Thorvarium 1 and 2. He developed one massive multiplayer online role-playing game called Herois e vampiros (Heroes and Vampires). He was also the lead designer in the production of the games Conquista de Titã, and My Big Brother. Olifiers is working as Head of MechScape at Jagex Ltd