[2][3] He began working as a clerk at Bandung's municipal government in 1935 until the Japanese takeover in 1942, during which he was promoted to financial inspector for the city.

[2] After the Japanese surrender, he joined the newly formed People's Security Agency (BKR) as part of its local leadership in Bandung.

[6] His first ministerial appointment was in 25 June 1958 while he held the rank of colonel, as State Minister for Economic Stabilization in the Djuanda Cabinet.

[10] The Third Working Cabinet saw Suprayogi's office being elevated to Coordinating Minister, at a time when he had been promoted to major general.

The Audit Board had previously been largely ineffective under Sukarno's presidency due to presidential control, and it did not begin investigating smaller cases of corruption until 1967.

[16] During his tenure as minister of production, he was also chairman of the Swimming Association of Indonesia (PRSI) and within this capacity Suprayogi in 1960 proposed a national centralized training system (Indonesian: Pemusatan Latihan Nasional, abbreviated as Pelatnas), which was implemented in the leadup to the 1962 Asian Games.