Product Prototype Designer

I need an experienced designer who can create a product prototype for me. The prototype will be primarily used for proof of concept purposes, so it needs to convincingly demonstrate both the functionality of the product and its user interface.

Ideal skills and experience for the job include:
- Extensive experience in product prototype design
- Strong understanding of how to create prototypes for proof of concept purposes
- Ability to design user interfaces
- Excellent communication skills to ensure we are aligned throughout the project