 After graduating from Gwangju Girls' Commercial High School, she went to Samsung Electronics at the age of 18 (or 19 in Korea) as an assistant to semiconductor memory researchers at the company.Since then she had worked for the company's departments related to memory semi-conductors for over three decades.In 2014 she was promoted to the executive for its flash memory development becoming its first female executive without higher education, from Honam region and one-year earlier than her co-workers.