Spring 2003 -, Professor, Department of Electrical and Electronics Engineering, Middle East Technical University, Ankara

Fall 1997 – 2003, Associate Professor, Department of Electrical and Electronics Engineering, Middle East Technical University, Ankara

Fall 1996 – 1997, Assistant Professor, Department of Electrical and Electronics Engineering, Middle East Technical University, Ankara

Spring 1996, Instructor, Department of Electrical and Electronics Engineering, Middle East Technical University, Ankara

1995-1996, Research Assistant Professor, Physics Department, New York University, New York

1994-1995, Postdoctoral Research Assistant, Physics Department, New York University, New York

Fall 1993, Instructor, Department of Electrical and Electronics Engineering,  Middle East Technical University, Ankara

1987-1993, Research/Teaching Assistant, Department of Electrical and Electronics, Middle East Technical University, Ankara