E-commerce Website Development

I'm looking for a skilled web developer to create an e-commerce website for me.

Key Requirements:
- Incorporate a robust shopping cart system
- Ensure the website is user-friendly, responsive and optimised for SEO

Ideal Skills:
- Proficiency in website development, particularly e-commerce platforms
- Experience with creating and implementing shopping cart systems
- Strong knowledge of SEO best practices

Please provide examples of previous e-commerce sites you have developed.