Since 1999 Marc Brummund directed numerous international award-winning commercials, amongst other for Renault, the WWF, Nescafé, the United Nations and Carlsberg.

His short film "Home" (2005) was nominated for the German Short Film Award; his graduation film "Land gewinnen" (2007) was celebrated in the section "Generation Kplus" the Berlinale premiere; the 20-minute youth drama about the plight of an illegal refugee child received the special prize of the Deutsches Kinderhilfswerk for the best short film and was awarded the same year with the Studio Hamburg Newcomer Award.

Since 2008 Marc directed several episodes of television series, among others for mystery series "The 25th Hour" and the crime series "Der Dicke". His medium-length documentary film "Fish & Onions", a secluded, Orthodox Christian community on the border between Estonia and Russia, celebrated at Filmfest Hamburg 2011 premiere. 2014, he directed the pilot episode of the crime series "Nord bei Nordwest".

In 2013 Brummund, together with Nicole Armbruster, won the German Film Award in the category "Best Screenplay - not filmed" for the screenplay "Sanctuary": A drama about a 14-year-old boy who comes into a church welfare home for maladjusted in 1968 , In January 2015 "Sanctuary" premiered at the Film Festival Max-Ophüls-Preis and was awarded the Youth Jury Award and the Audience Award. At the Bavarian Film Award in 2015 lead actor Louis Hofmann won the award for best young actor. In June of the same year "Sanctuary" launched in German cinemas.

Marc Brummund is the winner of the 2015 MFG-Star