- Lecturer at the Detartment of Mathematics, Gadjah Mada University, since 1982.
- Lecturer at the Department of Computer Science, Gadjah Mada University, since 1990.
- The Chairman of Computer Science Study Group, since 1997.
- Postgraduate Officer of Computer Science, Gadjah Mada University, since 1999.
Bidang yang diminati:
yang ada di Program Magister Ilmu Komputer