Born in Wonosobo, Sarimin was employed by the Wedana (district head) of Ajibarang, Central Java after finishing his studies at the OSVIA (academy of governance).

After he retired from politics, he began involved in business, becoming the President and Director of the Gresik Cement factory.

To make himself eligible for the Wedana position, from 1938 until 1941, he attended the prestigious Bestuursacademie (Civil Servants Academy).

Sarimin was still in office as the chairman, and his deputy was Sadjarwo the Head of General Politic Affairs and Planning of the Ministry of Agriculture.

[8] Due to his appointment as the Governor of Nusa Tenggara, his day-to-day work in the committee was partially helped by Singgih Praptodihardjo, the Deputy Head of Agrarian Affairs.

[9] As part of his job in the Ministry of Internal Affairs, on 14 July 1950 and 1 August 1950, Sarimin was appointed as the chairman of the Preparatory Committee of the Unitary State for East Sumatra (PPKNST, Panitya Persiapan Negara Kesatuan untuk Sumatera Timur) and the Committee for the Establishment of the Province of North Sumatra (P4SU, Panitia Penjelenggara Pembentukan Propinsi Sumatera Utara).

[11] His appointment as chairman was taking into consideration that the region of North Sumatra was ethnically diverse.

[10] On 23 July 1950, the Government of East Sumatra, represented by Raja Kaliamsyah Sinaga, officially responded to the program.

[19] After his resignation as the Governor of Nusa Tenggara, Sarimin was appointed as the President Director of the Gresik Cement Factory on 1 April 1957.