Hasan Sonsuz Çeliktaş originates from Mersin/Turkiye as his hometown. After attending Toros High School, he graduated from Ankara University with a degree in Public Relations. After working five years as a research assistant at the same University, he resigned and founded derKİ. Thereafter, he began writing for derKİ as well. Currently, he writes for Cosmopolitan, Esquire, Yeni Aktüel, and the Akşam Newspaper. The author of two books, he is married with two children.