In 1997, at the age of 26, Jacobsen moved to German Handball-Bundesliga team TSV Bayer Dormagen. Jacobsen scored 189 goals in 28 Bundesliga matches during the 1998 season, though Bayer Dormagen finished in 14th placed, and were eventually relegated. However, Jacobsen had caught the attention of reigning Bundesliga champions THW Kiel, and following one year at Bayer Dormagen, he moved on to Kiel.
