Ağırdır was born in Çal, Denizli in 1956. He has graduated from the department of Business Administration at the Middle East Technical University. Ağırdır has worked as manager at several industrial companies between 1979 – 2003. From 2003 to 2005, he served as the Coordinator and then as the General Manager of the History Foundation. He served as the General Manager and Member of the Board of Directors at KONDA Araştırma ve Danışmanlık Limited Şirketi between 2005-2022, and a member of the Board of Directors from June 2022 to May 2024.
He is the Vice Chairperson of the Board of the Turkish Economic and Social Studies Foundation (TESEV), the Founding Member of the Yanındayız Association, the Democratic Republic Program and the EYMIR Culture Foundation, a member of the METU Alumni Association, a writer for Oksijen Newspaper, and a commentator for the T24 Internet Newspaper.