OY WILHELM SCHAUMAN 1974 – 1975, UPM Kymmene 21.5.1979 – 2.11.1979, Metsä Group Industry Company 1979 – 1982, SCHAUMAN WOOD, UPM Kymmene 1982 – 1986, LUKE 1987 – 1988, University of Joensuu 1988 – 1989, Lapland University of Applied Sciences 1989 – 1992, Finnish Academy 1992 – 1993, University of Eastern Finland 1993 – 2004, University of Eastern Finland 2004 - …: PROFESSOR.

Operations Research and IDSS in wood harvesting, procurement and logistics of renewable wood raw-material in energy-efficient, environmentally efficient, carbon neutral and sustainable forest industry