H.C. Jenssen works as a freelance calligrapher, graphic designer and bookbinder in Oslo, Norway. She holds a BA in Calligraphy & Bookbinding from University of Surrey, Roehampton (London, UK).

H.C. Jenssen teaches calligraphy, typography and Graphic Design at Oslo by steinerskole. She is also a guest lecturer in calligraphy at BA Graphic Design, NTNU (Norwegian University of Science and Technology) Gjøvik and MA Design at KHIO (Oslo National Academy of the Arts).

H.C. Jenssen has exhibited several times in Norway and abroad (UK, Germany, Austria, Switzerland, Belgium, Italy).