Minou Kianirad was appointed by CBI Governor Mahmoud Bahmani as his deputy and head of the foreign currency department.
Kianirad, formerly in charge of the CBI international affairs department, will try to stabilize Iran's foreign currency market which has seen much fluctuation these days.
President Mahmoud Ahmadinejad has backed the appointment of more women to government positions.
Kianirad's appointment displays the growing role of female in Iran. She joined other female officials in the Islamic Republic, including Health Minister Marzieh Vahid-Dastjerdi and eight women lawmakers in the Iranian parliament.