Alexis Saelemaekers is a youth product of RSCA and plays as a winger. In February 2018 he made his debut for the first team. He gained his first starting spot in the first match of the Play-offs at the beginning of April facing KAA Gent. This summer, Saelemaekers was part of the Belgian selection for the European Championship U21. He was in the starting line-up once and fell in once.