Bjørnlund's first leading film role was Rasmus in 2008's One-Way Ticket to Korsør. He played one of the leading characters in the second series of Forbrydelsen (The Killing). Among his film roles are Karl in The Thing (2011) and Martin in ID:A (2011). He also played the male character in the 2012 music video for "The Fall" by Rhye.
