FCPA Kerretts is a founding member and Senior Partner of the firm. He is a Fellow of the Institute of Certified Public Accountants of Kenya (Reg. No. 949) and also a member of the Institute of Certified Secretaries Kenya. Prior to going into practice, he worked with the ESCO Group of companies with international offices and diversified interests, holding the position of Group Chief Accountant and Company Secretary, and a directorship in one of the associated companies. He served in these companies for over ten years acquiring hands on experience in financial, accounting, secretarial and corporate tax matters.

He also has experience working for the Kenya Government having worked in the Ministry of Local Government in the audit and finance teams. Joshua Kerretts has been a director of several companies including CFC Stanbic Bank, where he had been the Chairman of the Board Audit Committee for ten years. He also served in the Board of Kenya College of Accountancy, now KCA University established by the Institute of Certified Public Accountants of Kenya. He is currently serving as a director of Kaisugu Limited.

He has hands-on experience in financial, accounting, secretarial and corporate tax matters.