UX design for IB/Client portal (Fintech Online Trading).

We have a client portal which our clients use to refer business to our company, which is FP Markets. The purpose of this portal is so that our clients can see clients that they have introduced to us, the commissions we own them for the introduction of clients and client activity. The portal also has a number of other reports that are used by both our staff and our clients.
We have a team of developers and an existing portal, however we are updating it and wish to focus on UX and to first produce wireframes / designs for our developers.