Casper studied photojournalism at the Danish College of Journalism, and worked in documentary, fashion and street photography before moving into directing. This background continues to influence Casper's work, which often has a spontaneous yet informed documentary style to it.

Casper Balslev’s long body of commercial work includes films for brands such as Alpine, Renault, Mercedes, Volkswagen, Audi, Telenor, Vodafone, Carlsberg and The Royal Danish Theatre.

His short films for fashion brand Han Kjøbenhavn were selected for the Saatchi & Saatchi New Directors Showcase in 2013, and since then Casper has created numerous pieces that have garnered numerous awards internationally, including Lions in Craft at Cannes as well as a Eurobest Gold for Best Commercial Director.

Casper has also directed music videos for a variety of acclaimed artists including Alt-J, Marina & The Diamonds, MØ and Seinabo Sey.