He served as Minister of Agriculture and Food Industries in the Perikatan Nasional (PN) administration under former Prime Minister Muhyiddin Yassin from March 2020 to the collapse of the PN administration in August 2021.

He holds a Doctor of Philosophy (PhD) in political sociology from Universiti Sains Malaysia.

[2] He was Deputy Speaker of the Dewan Rakyat from April 2008 until the Barisan Nasional (BN) administration lost its re-election campaign in May 2018.

[3][4] Kiandee left United Malays National Organisation (UMNO) in the opposition Barisan Nasional (BN) coalition to become an Independent on 12 December 2018, before later joining BERSATU.

[5] After the then chairman of BERSATU Sabah, Hajiji Noor, announced on 10 December 2022 that all MPs and MLAs of BERSATU had quit the party and joined Gabungan Rakyat Sabah (GRS) coalition as a direct member in line of the federal coalition of GRS + PH + BN + Gabungan Parti Sarawak, Ronald announced he would stay in the party, and succeeded Hajiji as the chairman of BERSATU Sabah and PN Sabah.