[1]   2016.5  to  2019.4
Julius Maximilians University, Wurzburg  | Institute of Mathematics  | 博士后
Alexander von Humboldt Postdoctoral Research Fellow
The best Postdoctoral Fellowship in Germany,
worths 150,000.00 Euro Grant Award 
[2]   2016.10  to  2019.5
University of Nigeria  | Department of Mathematics  | Senior Lecturer
[3]   2013.10  to  2016.9
University of Nigeria,  | Department of Mathematics  | Lecturer I
[4]   2010.6  to  2013.9
University of Nigeria  | Department of Mathematics  | Lecturer II
[5]   2008.1  to  2010.5
Ebonyi State University,  | Department of Industrial Maths & Applied Statistics  | Assistant Lecturer