He is actively pursuing overseas market expansion, starting with Indonesia and Thailand, and is focusing on new business ventures in the finance and investment sectors. He also faces the challenge of recovering KakaoBank's declining stock price, which has been affected by the legal risks surrounding its parent company, Kakao.
Yun was born on June 20, 1971, in Anyang, Gyeonggi Province.
He graduated from Anyang Shinsung High School and Hanyang University with a degree in Business Administration.
Yun began his career at Daehan Fire & Marine Insurance, later working at ERGO Daum Direct and Kakao before being appointed as CEO of KakaoBank.
As an expert in finance and information and communication technology (ICT), he played a key role in the launch of KakaoBank.
He is recognized for leading the organization and business through autonomous and innovative management. Within KakaoBank, he is referred to by his English name, "Daniel," without any formal title.