Dierk Hagedorn is a multi-faceted designer for various aspects such as user experience and graphical interfaces, but also corporate and print design as well as illustration. He is an instructor for the long sword at a club for historical fencing in Hamburg; he is also a passionate wearer of armour. He has transcribed 30 of the approximately 80 surviving fight books in the German language and made them available on the website of his club or published them in book form.
He was the founder of an own publishing house as well as organiser and host of a literary monthly event at the Deutsches Schauspielhaus in Hamburg for ten years each.