Onesmus Muia was born in 1977 and comes from Muthembwa, Kivaa. He went to Kithyoko primary and later Machakos Boys.
After Machakos Boys, he joined Egerton University to pursue Applied Economics and is a banker with over 17 years of experience. After graduating from Egerton in 2004, Onesmus started as a Finance assistant and rose through the ranks to customer service manager in one of the biggest banks then – NIC Bank.
He later moved to Housing Finance to start commercial banking as the manager where he worked for 2 years and later went to Equitorial bank where he rose to be the acting General Manager.
From Equatorial Bank, he went on to start his own business and was the pioneer for commercial farming of onions and tomatoes in Machakos County.
While appearing before the Appointments Committee of Machakos county Assembly for vetting, On the issue of revenue collection, Muia proposed to have revenue collection automated and avoid revenue collected being used at source.
Muia hinted at reviewing the finance bill to consolidate business permits from several to just one. This he said would increase compliance and give the county more resources.
As CEC, Muia will face among other challenges over 2.8 Billion in pending bills which are currently under review by a task force, a bloated wage bill that takes up to 60 percent of the budget and was the highest in the country in the 2020/2021 Financial Year.