 Subsequently, he was employed as attaché at the Germany embassy in Bucharest from 1930 to 1933.In 1933, Dörnberg – who attracted attention by his height of about – worked for several months in the Disarmament Department of the Foreign Office, before he worked at the Embassy in Tallinn, Estonia from autumn of 1933 to 1936.After a stopover in the Political Department of the Foreign Office from 1936–37, he became a secretary of legation to the Embassy of Germany in London.