Career
At the 1928 Winter Olympics in Saint Moritz, Sigmund earned a silver medal in the ski jumping competition. Sigmund also competed in the ski jumping competition at the Holmenkollen ski festival, which first began in 1933. He also competed at the 1932 Winter Olympics in the ski jumping event, but finished 7th.
Additionally, Sigmund wanted to compete in the first alpine skiing events at the 1936 Winter Olympics, though he did not start.
Sigmund Ruud and fellow Norwegian ski jumper Jacob Tullin Thams are considered co-creators of the Kongsberger technique after World War I, a ski jumping technique that was the standard until it was superseded by the Daescher technique in the 1950s.