Dr. Julius is currently the Principal Secretary, The National Treasury & Ministry of Planning. Before this appointment, he was the Director General of the Vision 2030 Delivery Secretariat which operates under the Office of the President. Prior to this,  Dr. Muia served as the Secretary, National Economic and Social Council, Office of the President. He holds a First Class Honours Degree in Accounting; Masters Degree and PhD in Finance from the University of Nairobi’s School of Business. He is also a Certified Public Accountant (CPA-K); Certified Public Secretary (CPS-K).

Dr. Muia has over 20 years experience in leadership in the private sector in Kenya and UK. He started his career as an auditor with PicewaterhouseCoopers in the mid 1980s.