For many years Thomas worked for such renowned international advertising agencies as Ogilvy, Y&R, BBDO and TBWA. As Creative Director he advised well-known clients from various industries, taking charge of the creative output in cross-media campaigns (from TV spots to online projects). Thomas also worked for extended periods in South Africa and Romania. His creative work has earned him international awards and is also published in design books. Apart from working for HPS, he manages his own Neumann | Communications & Design agency in Frankfurt.