Olaitan began his senior career with the Beninese club
Ayéma Adjarra, where he scored 10 goals in 28 matches during the 2020–21 season. Olaitan transferred to the French club
Niort on 31 January 2022, signing a three-year contract. He made his professional debut with Niort in a 2–0
Ligue 2 win over
Quevilly-Rouen, coming on as a late sub in the 84th minute. He joined
Troyes in the 2023 transfer market with a release clause amounting to €1.7 million and his contract is valid until 2025. On 30 August 2024, Olaitan signed for Ligue 2 club
Grenoble on a three-year contract. On 26 July 2025, Olaitan signed a four-year contract with
Göztepe in Turkey. On 3 February 2026, Olaitan joined
Beşiktaş on a permanent three-year deal with an option for another year. ==International career==