Service-oriented E-commerce Site Design

I'm in need of a professional web designer with extensive experience in online and affiliate marketing to create a website for selling services. The site should incorporate key features such as a shopping cart, customer reviews, and downloadable content.

Key Requirements:
- Proven experience in designing service-oriented e-commerce sites
- Strong knowledge in online and affiliate marketing
- Skills in incorporating interactive features like customer reviews
- Ability to design a user-friendly shopping cart
- Experience in creating sites with downloadable content

A strong portfolio showcasing similar projects will be highly considered.