Ato-Zandanga is a product of the academies of the French clubs CFFP, CS Brétigny,
Montferrand and
Torcy. He began his senior career in 2022 with the Spanish
Tercera Federación club
Santanyí. In 2024, he had a stint with the French
Championnat National 3 club
Lusitanos Saint-Maur. In January 2025, he joined
FC Sion, and was originally assigned to their reserves in the
Swiss 1. Liga. On 11 July 2025, he transferred to
FC Wil in the
Swiss Challenge League. ==International career==