On his return to Nigeria, Dr Ero worked with Federal Ministry of Petroleum Resources as the Head of Department of Petroleum Resources (DPR), Warri from 1974 â€“ 1977. Between 1977 and 1988, he was Branch Superintendent â€“ NNPC, Warri; Head, NNPC Central Purchasing and Supply Department.
Head, Group Managing Directorâ€™s Office. He became General Manager, Oil and Gas Operation in 1988 . Dr Ero, served as General Manager, Commercial, Nigeria LNG; Human Resources Development â€“ NNPC and Services, NAPIMS between 1989 â€“ 1991. Between 1991 and 1996, he was the Managing Director National Engineering and Technical Company (NETCO), a subsidiary of NNPC. In 1996, he became the Group General Manager/Chief Executive Officer, National Petroleum Investment Management Services (NAPIMS). In 1999 he was made the Managing Director, IDLS â€“ Benin City (NNPC). He retired from NNPC in 2000 and has been the Chairman, Arkleen Oil and Gas Limited.
Dr Ero had made tremendous contributions to the development of the Engineering profession in Nigeria. These include: the execution in Nigeria of the Detailed Engineering of the Escravoc Gas Plant by NETCO between (1993 â€“ 1995 and the export of Natural Gas Liquid (NLG) from Nigeria in the NNPC/Mobil Oso NGL Project.
Dr Ero was honoured with Awards for the outstanding contributions to the development of in-country technological capability by then US Secretary of State in 1995, distinguished presentation at an Oil Seminar in Spain 1978 and the Doctorate degree in Business Administration (Honoris Causa) of the Ambrose Alli University, Ekpoma.
He is a COREN
Registered Engineer, fellow, the Nigerian Society of Engineers, Institute of
Director of Great Britain, Honorary fellow, the Nigerian Society of Chemical Engineers.