Ruth Wanyonyi is a holder of a Master of Science Degree in Finance from JKUAT, Bachelor of Commerce in Finance from KCA University and is a Certified Public Accountant (K) with membership at ICPAK. She is the Assistant Accountant General (AAG) at the State Department for Industry. She joined the department in June 2018 having previously worked at various Ministries, Departments and Agencies.

Ruth was appointed as an Alternate to the Principal Secretary, State Department for Industry on 4^th  February 2025. She is a member of the Audit and Risk and Finance and Strategy Committees of the Board.