PHD developer, Software developer required for build a programming

Hi everyone,
How’s doing?
I have a project which I have to do within few weeks, my requirement is I need to build programmings like sharing a link to 5 people and you will get a PROMO CODE And website link, and that will be completely free of cost product link, so they can purchase from our WordPress website. Once they have done sharing to five people another person sharing the link they also should get the PROMO CODE and website link each time it should be Unique PROMO CODE and it should accessible with WordPress, contact who can work with me on this project.