His work involves both an individual artistic production, as well as a curatorial practice – most recently 'Dear Cockettes' at UKS, Oslo. His process-based art and installations draw inspiration from literature, decadence, sub- and countercultures and a pursuit of the beautiful. Believing everything is but a mirage it investigates a self-chosen 'moral degeneration'; an inverted system of ideals within the borderlines of morality and ethics. One of his main concerns is the precariousness of life and the fragility of beauty, attention to aesthetic experience and relevance of the formal properties of object's of art. Together with Ida Ekblad, he runs the artist-space Kristiania Kunstmagasin where shows are organised in their apartements as well as in abandoned buildings and at non-profit venues. He is also part of the artist group Institutt for Degenerert Kunst with Arild Tveito and Eirik Saether. Nordby has exhibitied in institutions such as Artin General, New York, USA, The Swiss Institute, New York, White Columns, New York and Rhizome, New Museum, New York.