Prior to her appointment, Ms. Dena has served in various organizations including the Stagecoach Bus Services, AIG Global Investments and PineBridge Investments East Africa in different capacities. The Netherlands trained and United States International University don also serves on the boards of several institutions including Kenya Ports Authority, and Information Communications Technology Authority. She is also a member of the Institute of Certified Accountants of Kenya and Institute of Certified Public Secretaries of Kenya.