When becoming African champion in 2022, she was the first Senegalese medalist at this competition since 2016, together with Saly Sarr who took the silver behind her, and male long jumper Amath Faye [fr]. Kandji represented the club Jaraaf.[2] In order to reach the 2023 World Championships and the 2024 Olympic Games, she trained in France under Christophe Limet in A3 Tours, then under Alain Doré in Amiens Université Club.[3][4][5] She was the only Senegalese woman to qualify for the 2023 World Championships.[6]
Her personal best jump is 13.76 metres, achieved at the 2022 African Championships in St Pierre, Mauritius.[1]