Santos began training and showing at the age of 14 in the center of Buenos Aires, Argentina. His first instructor and role model was an Olympic medalist Carlos Morratorio, some years later he rode at the Military School of Buenos Aires where he trained in eventing, dressage, and show jumping. In 2002 he moved to the States and took on an assistant trainer position for Federico Sztyrle of Wollfer Estate Stables (also known as Sag Pond Farm) out of Bridgehampton, NY.
Throughout the duration of his employment at Wollfer Estate he was able to work in Germany for Soren Von Ronne, a gold and silver medalist of the 1994 World Equestrian Games.
In 2009 Santos had the opportunity to work with Charlie Weaver, a member of the National Show Hunter Board of Directors and its Hall of Fame in order to further his expertise in the hunter and equitation divisions.
Santos created his business model based on making sure his students are aware that this is a sport where you are not dealing with a tool such as a tennis racket or a bicycle. You are dealing with animals that have their own personality and temperaments, therefore as a rider you must understand this concept in order to get the best outcome as possible for the horse as well as the rider.