After graduating from the Balletakademin's musical line, Jesper Blomberg has, among other things, performed in The Addams Family at Lorensbergsteatern and Slakthuset in Malmö where he also appeared in the role of Lurch several times, in My Fair Lady at Aarhus Teater in Denmark, La Cage aux Folles at Uppsala Stadsteater where he also appeared in the role of Jacob in The Book of Mormon at Chinateatern, On the Town at Kulturhuset Spira in Jönköping, Little Shop of Horrors at Göteborgs Stadsteater and Sister Act at Chinateatern. Furthermore, he has participated in several concerts, including with big bands, in two ice shows as a figure skater and as a dancer in the musical film En del av mitt hjärta.
At Göteborg Opera Jesper has previously appeared in Wicked, Cabaret, Märchen im Grand Hôtel, Twelfth Night Concert and Ball, Jultrad-i-ton and Festkväll.