Şen Demirer graduated from the Middle East Technical University's Department of Architecture in 1979. In 1987, after her professional experience in many areas, particularly sales management, With the foundation of Yapı Kredi Leasing A.Ş., which was the first financial leasing company in the Turkish financial market. she joined the company's Marketing and Sales Management team. She was named General Manager of Rant Leasing in 1997 after working as Assistant General Manager at Yapı Kredi Leasing. Between 1997 and 2001, she worked at Rant Leasing. Demirer has been a partner of add since 2001, and her areas of expertise include general management, marketing and sales management, customer relations management, credit management, and international relations.