A native of Madagascar, Rakotoarimanana grew up in the port city of Toulon, France, and began playing table tennis at the age of seven.

[1][2] At the 2014 French national championships, while competing in the benjamins (under-11) category, he won the silver medal in the singles event, and partnered with Alexis Lebrun to win gold in doubles.

[2] In December 2022, his father announced that he had accepted an invitation from the Malagasy Table Tennis Federation to switch allegiances and join his home country's national team.

[19][20] Rakotoarimanana was selected as a flag-bearer for Madagascar at the opening ceremony of the 2023 Francophone Games,[21] where he took silver in the singles event after losing to Eduard Ionescu in the final.

[26] Notably, he beat Olajide Omotayo 3–0 to secure Madagascar's 3–1 upset victory over Nigeria in the group stage.

[27] In March, Rakotoarimanana competed at the postponed 2023 African Games and won a bronze medal in the mixed doubles event with Hanitra Raharimanana [fr].