Moioli was born in Olcio di Mandello Lario in 1927.[1] A worker at the Italian motorbike manufacturer Moto Guzzi based at their plant in Mandello del Lario, he became a member of the company's rowing team, Canottieri Moto Guzzi. A coxless four was formed with Moioli, Elio Morille, Giovanni Invernizzi, and Franco Faggi. The first time they left their home training ground, Lake Como, was when they travelled to the 1947 European Rowing Championships in Lucerne, Switzerland. Little known in rowing circles, they unexpectedly won the gold medal in their boat class. The four were to dominate this boat class until 1952, continuously winning all races they rowed including all heats.[2] In 1948 he was a crew member of the Italian boat which won the gold medal in the coxless fours event. Four years later he was eliminated with the Italian boat in the semi-final repechage of the coxless four competition. At the 1956 Games he was part of the Italian boat which finished fourth in the coxless four event.[1]