Modern E-commerce Site Setup

I'm looking for an experienced freelancer to build my e-commerce website using my provided HTML code. The site should have a modern design and include the following essential features:

- Shopping cart
- User account system
- Payment gateway integration

Ideal Skills and Experience:
- Strong proficiency in HTML and e-commerce platform integration
- Experience in implementing shopping carts, user accounts, and payment gateways
- Strong eye for modern design aesthetics
- Prior experience with e-commerce sites is a plus

Please provide examples of previous work.