Visio Diagram Creation

I need someone proficient in Microsoft Visio to create professional business diagrams. The consultant must be able to source or create Visio shapes that depict various business scenarios. I will provide a description of what needs to be produced, and they will need to create a professional Visio diagram I can use in a formal report. It is important the consultant is able to use, or create, a professional diagram and not just using basic shapes or boxes from Visio. The final deliverable must be provided in both PDF and native Visio files. Three Diagrams.