Federal University of Technology, Owerri
– Professor (UASS 07: 01 – ) – 2015 – Date
– Reader (UASS 06: 01 – 05) – 2012 – 2015
– Senior lecturer (UASS 05: 02 – 05) – 2009 – 2012
Michael Okpara University of Agriculture, Umudike
– Senior Lecturer (UASS 5: 2) – 2008 – 2009
-Lecturer I (UASS 4:6) – 2005 – 2008
-Lecturer II (UASS 3:14) – 1997 – 2005
-Assistant Lecturer (EUSS 8) – 1995 – 1997
Department of Statistics, Imo State University, Owerri
-Adjunct Lecturer, Postgraduate Demography and Time Series,
Department of Mathematics and Computer Science, Federal
PolyTechnic, Nekede, Owerri
-External Examiner 2011/2012 – 2013/2014
Department of Statistics, Abia State university, Uturu,
-External Examiner 2015/2016 – 2017/2018
Abia State university, Uturu,
-External Examiner 2015/2016 – 2017/2018
Department of Mathematics/Statistics,
-External Examiner 2019/2020 – 2020/2021