Design/ Only Design

I have a project for one of my customers where we need a design. (Please note only the design) of an expense module. It consists of creating the look and flow of the user experience. The user will use the site and the mobile site to track their expenses. When tracking their expenses they will add categories and sub categories to the expenses. They will be able to run reports and see on an expense dashboard the different expense categories and sub categories. What I am looking for: Some one with experience in user interface and user experience design. It needs to be very easy to use and fast to post expenses. You will need to provide the design for both the site and the mobile site. You must show previous related work when placing the bid. If you don't share previous work I will not look at the proposal. Once I see your bid I will provide more details and current site. I have a programmer, but I am looking for a designer that can create great a great user experience.