Mr. Nyong retired as Auditor-General of Cross River State, Nigeria on March 17, 2020, a position he held since 2003; He is also a member of the Federation Account Allocation Committee (FAAC) Sub-Committee on IPSAS Adoption and Implementation in Nigeria, where he provides leadership on IPSAS implementation in the country. He was Chair of Body of Federal and State Auditors-General in Nigeria from 2007 until 2013. He has ten years of experience in banking as Financial Controller, Head of Energy Sector, and Branch Manager with Cooperative Development Bank PLC and Chartered Bank PLC
In collaboration with the Government of Cross River State, Mr. Nyong established a tuition centre where candidates are prepared for the professional examinations of the Institute of Chartered Accountants of Nigeria (ICAN). The Centre has produced over 600 Chartered Accountants since its inception in August 2008.
He is currently engaged in Public Financial Management Consultancy, assisting States in Nigeria and an African country on IPSAS implementation and PMF reforms.
His Technical Advisor is Kelly Ayamba.