Ruling on giving a kickback or bribe to a consulting engineering company if they give them a project contract

I own a contracting company and I want to run my business in a manner that pleases Allah; I do not want to begin my project with anything that Allah has forbidden. I intended to give some money as a gift to anyone who brings projects to our company, because I cannot get any work, since the consulting engineering companies have engineers who do not advise their clients to go to any contracting companies except those who give a kickback to these engineers in return for awarding their contracts to their companies. I do not know whether it is permissible to pay this money to these engineers, especially since they take it without the knowledge of the owners of these engineering consultancy companies. Is it permissible for me to pay this kickback to them? Is it permissible to give it to someone else?