Harmenberg completed two years of study at the Massachusetts Institute of Technology (Massachusetts Institute of Technology) in 1979, leaving his course early (he would have graduated in 1981) before returning to Sweden to pursue his fencing career.
World Championships He earned his World Championship titles in Individual Épée and Team Épée events at the 1977 competitions in Buenos Aires. World Cups Harmenberg captured three Individual Épée World Cup Championships within four years: 1977 (Bern), 1979 (Heidenheim), and 1980 (Heidenheim).
Harmenberg was a member of the Swedish épée team as well. The team placed 5th in the team épée competition.
