Olunga started his career in Tusker, one of the teams of his country, and later played for teams such as Thika United, Gor Mahia, Djurgarden, Zhicheng, Girona, Hengfeng, Reysol, Al-Duhail.
Having a great performance in the Qatar League this season, Olunga scored 22 goals in 20 games and produced 1 assist. Olunga managed to stay on the field for a total of 1641 minutes.
On the other hand, Olunga played a total of 46 matches with the Kenyan national team, and managed to shake the opponent’s nets 19 times.