Research and development engineer Siemens, Munich, 1958-1965, assistant to Research and Development head, 1965-1968, head technical press department, 1969-1979, senior director research and development, 1987-1989, senior director semiconductors, 1990-1996. Editor-in-chief Funkschau Magazine, 1980-1986. Chairman board of curators Eduard Rhein Foundation, Mayen, Germany, 1988-1999.
Vice president Union International de la Presse Electronique, Bern, 1986-1988. Science lecturer Political High School, Munich, 1969-1973. Science journalist, since 1996.