Hannah is an advocate of the High Court of Kenya with over 20 years of experience in legal standing. She is currently practicing Law in the name and style of Hannah Muriithi & Co. Advocates in Nairobi, specializing in Legal Research & consultancy, Legal Audit and Emerging Areas of Law.

Hannah has previously served on various other Boards, including state corporations, prior to her appointment as the Chairperson, KDIC Board of Directors.

As Chair of the Task Force for Universal Health Coverage (UHC), notable achievements in Hannah’s governance pathway was the formulation of the UHC framework, currently documented in the Government's vision and Development Blueprint as one of the keys in the 'Big four’ Agenda.  The strategy guarantees accessible, affordable and sustainable health insurance. (2018-2021)

Further, Hannah was the Founder Chairperson of the Board of Kenya National Highways Authority (KeNHA), where she spearheaded the operationalization of the organization from inception to become one of the revered parastatals in the Country.

She has  served as the Chairperson of a Task Force under the Ministry of Agriculture, which  as per its Terms of Reference, succeeded in consolidating 8 parastatals dealing with coffee, tea, sugar, horticulture, pyrethrum, sisal, cotton, coconut to form one parastatal called Agriculture Fisheries and Food Authority (AFFA).

Hannah holds a Masters Degree in Business Administration (Strategic Management) from Moi University (MBA), a Bachelor of Laws Degree (LL.B) (Hons.) from the University of Nairobi and a Postgraduate Diploma in Law from the Kenya School of Law (Dip KSL). She is also a Certified Public Secretary of Kenya (CPS.K).   An active member of the Law Society of Kenya and the Institute of Certified Public Secretaries of Kenya (ICSK).