Xavier Marquis - is a video game director. Xavier Marquis began his career in 2015 and has worked for companies such as Ubisoft, Ubisoft Montreal, Sperasoft and Ubisoft Entertainment. Xavier Marquis's first game was Tom Clancy's Rainbow Six Siege which was released 8 years ago. Best Game Xavier Marquis contributed to was Tom Clancy's Rainbow Six Siege. Xavier Marquis's latest work is Tom Clancy's Rainbow Six Siege which was released 8 years ago.