Mr. Kiuna graduated with a Bsc Hons in Mechanical Engineering from the University of Portsmouth.

His professional experience has involved working as a General Manager/ Director at Holman Bros EA and as a Managing Director at Johnson Diversey. He is currently the Managing Director of Maxam Limited.

His other directorships include Marshalls (EA) Limited, KIA Motors Limited, JohnsonDiversey East Africa Limited, BOCKenya Limited, Proctor & Allan E.A. Limited, Proctor & Allan (Uganda) Limited, Avery East Africa Limited, Access Kenya Group, Broadband Access Ltd, Flashcom Limited, Chai Bora Ltd, Zeniki Investments Ltd, Zenicom Investments Ltd, Maisha Nishike Ltd, Karitie Ltd, Cooper Kenya Ltd, Cooper K Brands Ltd and X & R Technologies.