At the age of 32 years he became dean of the Faculty of Economics,
University of Indonesia, He published more than 20 journal articles and several books. Firmanzah also advised the Digital Divide Institute's "economic track" in which he explored the economic model for meaningful broadband for presentation to the Indonesian government. In 2012, Firmanzah was appointed the special adviser for economic affairs to then-President
Susilo Bambang Yudhoyono. == Selected books ==