John is a founder member of Funguo Investments Ltd and a Senior Partner with the law firm of Simba & Simba, Advocates. He has diverse experience gained while working at the Attorney General’s Chambers, ICDC and National Bank of Kenya Limited as Executive Chairman (CEO).

John is a past Chairman of several Institutions including; Federation of Kenya Employers, Kenya Bankers’ Association, Retirement Benefits Authority, APA Insurance Limited, Mather + Platt Kenya Limited, University of Nairobi Council and President, Rotary Club of Nairobi.  He currently is the Chairman of the boards of Funguo Investments Limited, Sanlam Kenya PLC formerly Pan Africa Insurance Holdings Ltd, Bamburi Cement Limited, Choice Tea Brokers Limited and is a Board Member of Coca Cola Juices Limited, Almasi Beverages Limited and is the Chancellor of Pwani University.

John holds Doctor of Laws (Honoris Causa) degree from the University of Nairobi, LLB Degree from the University of Dar-es-Salaam and a Diploma in Law from the Kenya School of Law.