Nsimba began his senior career with Gobelins in 2017, and shortly after moved to Bobigny where he had a stint. He transferred to Les Ulis in 2021, where he played for seasons. He spent the 2021–22 season with Bourges, where he was one of the top scorers with 16 goals in 30 games. This earned him a move to newly promoted Ligue 2sideLaval on 20 June 2022. In September 2022, he suffered a knee injury that rules him out for several months.