Commercial clerk Eastern Railway, Howrah, Calcutta, India, 1945-1950. Research assistant Konar Dam, Damodar Valley Corporation, Bihar, 1950-1954. Assistant engineer Electricity Supply Board, Rangoon, Burma, 1954-1958.
Laboratory technologist Foundation Engineering Ltd., London, 1958-1959. Technical officer Public Works Department, Accra, Ghana, 1960-1965. Higher technical officer Federal Ministry of Works, Lagos, Nigeria, 1965-1970.
Principal technical officer Plateau State Ministry of Work, Jos, Nigeria, 1970-1978. Materials engineer Tilley Gyado & Company, Jos, 1978-1979. Principal technical officer Etteh Aro & Partners, Jos, 1979-1981.
Managing director Technology Management Ltd., Jos, since 1981, Agro Products Nigeria Ltd., Jos, since 1981, corporation director. Consultant in field.