 He was among the first founding staff of the leading newspaper "Milliyet" as a close collaborator of famous Turkish journalist Abdi Ipekçi.He also served under the government of Suleyman Demirel as speaker of the government in the 1960s.In the 1970s, during the government of Bülent Ecevit, Ersin was offered various diplomatic functions in Iraq, Lebanon, Switzerland, Germany and Belgium.