Ms. Lilian B. Mahiri-Zaja holds a Master of Laws Degree from the University of Reading, United Kingdom (2002); a post- graduate Diploma in Legal Education from the Kenya School of Law (1989); and an LL.B. (Hons.) Degree from the University of Nairobi, Kenya (1988).
In 2011, She was appointed as the Vice Chairperson of the Commission at the Independent Electoral and Boundaries Commission (IEBC) of Kenya. She was a member of the Technical Working Group that developed a mechanism for women representation to ensure implementation of the two-third gender principle.
Ms. Mahiri-Zaja is an Advocate of the High Court of Kenya and has been appointed severally to serve in various national and international institutions; including the Committee of Experts on Constitutional Review in 2009-2010, Presidential National Committees, Task Forces, various Commissions and the African Union Commission on International Law (AUCIL).