| 1993-present | Professor, Department of Mathematics, Kocaeli University, Izmit - Turkey |
| 1994-2006 | Chairman of Applied Mathematics Division |
| 1994-2006 | Head of Applied Mathematical Sciences Research Center, Kocaeli University |
| 1997 | Spring Semester, Visiting Professor, University of Nebraska - Lincoln, Department of Mathematics and Statistics, Lincoln, Nebraska, U.S.A.u |
| 1992-1993 | Visiting Professor, Dept. of Mathematics, Marmara Research Centre, Turkey |
| 1991 | Visiting Professor, Moscow State University (Russia) |
| 1989-1992 | Professor, Baku State University (U.S.S.R) |
| 1986-1988 | Associate Professor, Moscow State University (Russia) |
| 1983-1985 | Assistant Professor, Baku State University (U.S.S.R) |
| 1979-1982 | Ph.D. Student, Moscow State University |
| 1977-1978 | Research Specialist, Keldysh Applied Mathematical Institute, U.S.S.R. Academy of Sciences, Moscow |