- Member of the Reichstag
- Minister of the Treasury from 1920 to 1921
- Minister of Economic Affairs from 1923
Raumer joined the Reichstag in 1920 to represent the DVP, which he left in 1930. Reichskanzler Fehrenbach named him Minister of the Treasury in the same year in which he took office as a Member of the Reichstag. He played a major role in the Treaty of Rapallo negotiations. In 1923, he took on the post of Minister of Economic Affairs in Stresemann’s government. While in office, he focused his efforts first and foremost on promoting economic cooperation with France and the Soviet Union.