1986 – 1994: Teacher in Hamburg / Germany

1986 – 1989: Teacher at „Gymnasium Bondenwald“ in Hamburg-Niendorf for Mathematics, Physics and Computer Science (Informatik)

1989 – 1994: Teacher at „Gymnasium Hochrad“ in Hamburg-Othmarschen for Mathematics, Physics and Computer Science (Informatik); responsible for Computer Science Department and career advice for students