Is it haram to work and borrow at a 16% interest rate from entities funding youth projects, such as the Dakahlia Businessmen Association and the Sanabel Association?

If the work in this association is connected to prohibited loans, then it is not permissible, in accordance with the Almighty's saying: "And do not cooperate in sin and aggression." However, if the work in it is not connected to usurious transactions and is limited to permissible aspects of work, then there is no objection, although it is better to leave it and search for another job that is free from prohibited dealings. The criterion is what the association actually practices, not the names of the individuals or entities that fund it.