Bin Sulayem joined DP World in 1982. In October 2023, it signed a 30-year concession agreement with the Tanzania Ports Authority to operate and modernize Dar es Salaam Port, with an initial investment of more than $250 million that could increase to $1 billion during the concession period. DP World recorded revenues of $9 billion in the first half of 2023, a 14% increase compared to H1 2022. Bin Sulayem is also the chairman of the Ports, Customs, and Free Zone Corporation.