Expert PyQT Professional Required

I'm in need of an expert in PyQT who possesses strong skills in widget customization and event handling. The application to be developed will run on Windows operating system. Primarily, the PyQT application should be capable of executing data processing and visualization tasks effectively. The ideal candidate should have:

- Proficient knowledge in PyQT specifically GUI design
- Experience in widget customization
- Strong event handling abilities

If you have a proven track record of developing PyQT applications with similar functionality, don’t hesitate to place your bid.