Roosseno planned several of the most notable buildings in Jakarta, including the Hotel Indonesia, Istiqlal Mosque, and the National Monument.

[3] Three months after Roosseno's graduation, he founded an engineering firm along with his senior Sukarno who had recently been released from prison for political activities.

[6] During the Japanese period, Roosseno was appointed as a professor at the reopened THS (called Bandung Kogyo Daigaku during the occupation).

[5] He was also appointed into the advisory body Chuo Sangi-In [id], representing the Kediri region, and later also into the Investigating Committee for Preparatory Work for Independence.

[7] Roosseno created and ran a "weapons laboratory" during the Indonesian National Revolution, which focused on sabotage of bridges in particular.

[9] As Economic Minister, Roosseno started a number of measures which tightened controls on foreign trade and banks.

[11] During the Dutch period, Roosseno wrote a number of articles in the journal De Ingenieur in Ned.

[14] This was due to the low pay offered by academic institutions, and Roosseno only served as professor extraordinarius in Bandung.