After retiring from competitions Cimnaghi worked as a sports administrator. As a member of the European Union of Gymnastics he oversaw international junior competitions from 1984 to 1989. In 1988 he served as the chef de mission with the Italian Paralympic Team at the Nagano Winter Olympics, and in 1999-2004 worked as the manager of the Stadio Olimpico in Rome. Cimnaghi was a member of the organizing committees of the 1981 European Men's Artistic Gymnastics Championships, 1998 FEI World Equestrian Games, 2006 Winter Olympics and 2009 Mediterranean Games.