During his amateur rugby career, Aiolupo played for the Samoan club Moata'a. He made his debut with Western Samoa against Tonga, at Suva, on 22 June 1983. He was part of the 1991 Rugby World Cup roster. His last international match was against Australia, at Sydney, on 6 August 1994, playing 36 games and gaining 83 points. In particular, Aiolupo's achievements included participating at the tours of Britain and Irleand in 1988 and of Australia in 1994, playing at the 1991 Rugby World Cup and the 1993 Rugby World Cup Sevens for Samoa sevens. One of the highlights of his performances for the Samoa national team was the game against Bridgend on 22 October 1988: Aiolupo, number 22, scattered Samoa's left-flank attack after a lineout, ending with a pass through the centre and a try scored by Tauvere Ugapo.