Arumainayagam was part of the India national team during the golden era of the country's football under coaching of Syed Abdul Rahim.

[3] He was also part of the Indian team that achieved second place at the 1964 AFC Asian Cup in Israel.

[4][5][6][7][8] He also participated in the 1962 Jakarta Asian Games which India won.

[9] In Mohun Bagan AC, he played with Jarnail Singh, Chuni Goswami and others in the 1960s.

[10] Arumainayagam was the head coach of the India women's national team, when India's first international women's football tournament, named Jayalalitha Gold Cup was held at Chennai in 1994.