He is also a member of Trade, Cooperatives, Industrialization and Enterprise Development Committee; Members Welfare, Catering and Library Committee and Agriculture, Livestock and Fisheries Committee.
Hon. Kariuki holds a Diploma in Sports Science from Laikipia University and is an alumnus of Silanga Primary and secondary schools.
Before joining the County Assembly as an MCA, he was the youth representative of Football Kenya Federation in the Central Rift branch. He was also a football player of AP Kipipiri Division One league.
Hon. Kariuki was also the organizing secretary of the Bodaboda Association of Kenya (BAK) and the Deputy Secretary General of Jubilee party in Nyandarua County. He was also the head coach of Passenga Secondary School football club that has been posting marvellous wins internationally.