Inger completed his dance training at the Royal Swedish Ballet School and at the National Ballet School in Canada. From 1985 to 1990 he danced with the Royal Sewdish Ballet in Stockholm. Fascinated by the works of Kylián, Inger joined NDT 1 in 1990 where he was a high-profile dancer until 2002. Soon his talent for choreography was noticed.
From 2003 to 2008 Inger was artistic leader of the Cullberg Ballet for which he made various choreographies. In 2008 Inger stopped as artistic leader for Cullberg Ballet so as to devote himself entirely to choreography.