Vairo started his career at Rosario Central in his home city in 1947, he played for the club for 8 seasons before moving to Buenos Aires to play for River Plate. River won three consecutive league titles between 1955 and 1957.
Vairo played for the Argentina National team at the World Cup held in Sweden in 1958. At one time he was the player with the most games played for the national team. His record was not broken until the 1990s.
In 1960 Vairo joined ChileanO'Higgins. His first three seasons with the club resulted in mid-table finishes, but the 1963 campaign saw the club relegated, finishing 18th and last in the table.
1964 saw O'Higgins' successful return to the Primera División de Chile by winning the Chilean Second Division title. In 1965 Vairo dedicated his life to the youth leagues as coach of River Plate, where he was in charge of training and turning amateurs to professionals first division footballers.
From 1999 to 2010, River Plate hired him to scout youth players from the Santa Fe Province. One of the best players he scouted was Lionel Messi, when he was 12 years old, despite the fact that he later left the club for Barcelona.[2]
In 2005, he was given an award at the 50th anniversary party of O'Higgins.[3]
Between 1955 and 1958 Vairo played 41 games for the Argentina national football team. He helped Argentina to win the 1957 Copa America and represented Argentina at the 1958 World Cup.
