Malmsten comes from a family of actors. His father is actor Rein Malmsten. His paternal grandparents were actors Franz Malmsten and Eva Meil. His great-uncle was actor Hugo Malmsten and his great-aunt was actress Lydia Bock.[1]
Since 1993 he is working as an actor in Estonian Drama Theatre. Besides theatrical appearances he is also played in numerous films and television series, e.g. Wikmani poisid. He is married to actress Harriet Toompere and the couple have two sons, Franz and Hugo, who are also both television and film actors.[1]
