Composite data grid component for Windows desktop app

We need help to develop a composite data grid component for a Windows desktop app. The widget is based on two coupled data grids, but is functionality rather simple, and a running prototype restricted functionality written in PyQt is available. We are looking for a freelancer with 1. Documented ability to provide aesthetically laid-out and modernly styled widgets. 2. Documented ability to provide a good MVC design, clean API and readable code. 3. Ability to support call back to C++ code. 4. Documented ability to deliver code on time. If you think that you qualify for the project, we will share wireframes and a detailed widget description so that you can place a correct bid. The PyQt prototype will be shared with the winning bidder.