After some years as journalist in Paris, he moved to Constantinople in 1910, where he joined the editorial staff of Osmanischer Lloyd, the German language newspaper co-founded and managed by Dr. Friedrich Schrader, who served as his mentor.
After German intelligence got hold of a letter where he openly expressed these critical views right in the middle of World War I, in 1916, Kaufmann was deported by the Turkish authorities allied with Germany to Ankara, and later expelled from Turkey.
He worked as deputy editor in chief for some time, until he was fired after the newspaper was bought by the powerful Stinnes trust, and Hugo Stinnes had made Hans Humann, the former German military attache in Constantinople, and back then the main adversary of Weitz, Schrader and Kaufmann, the CEO of the DAZ publisher.
In 1925 Kaufmann moved to the United States, where he became a correspondent of Hamburger Fremdenblatt, at that time Germany's leading business and commerce newspaper, and also served as editor of a German-language daily newspaper in Newark, New Jersey, the New Jersey Freie Zeitung.
At the same time he became active in the Deutsch-Türkische Gesellschaft (German Turkish Society), where he became publisher of the regular proceedings of that association.