Wieck studied history and philosophy in Hamburg from 1947 to 1952 and received his PhD in 1953 with a dissertation named "The Origin of the Christian Democratic Union and the re-establishment of the Centre Party from 1945 to 1947.
[2] He was also permanent representative of the Federal Republic of Germany at the North Atlantic Council (NATO).
He served at the Ministry of Defence inter alia as head of the Policy Planning Staff and became president of the BND from 1985 to 1990.
After his retirement from government service he was head of the OSCE Advisory and Monitoring Group in Minsk, Belarus from 1998 to 2001.
(GKND), a discussion group about intelligence services in Germany founded by his former colleague Wolbert Klaus Smidt in close cooperation with him.