He made his first team debut at the age of 17, right after the World War II. Mees who had become a leader of the team, won its first Championship title in 1957, while he had lifted the Belgian Cup two years before.

Known as a gentleman footballer, "Vicky" was at the time a pillar of the national team. In total, Mees earned 68 appearances and he played in the 1954 World Cup.

He won the Belgian Golden Shoe in 1956 while at Antwerp.