E-commerce Website Development

I need a skilled web developer to create an e-commerce website for me. The primary purpose of the website is to sell products or services, and I will be offering between 11 to 50 products or services on the site.

Key Requirements:
- User-friendly interface
- Secure payment gateway integration
- Product categorization and search functionality
- Mobile-responsive design
- SEO optimization

Ideal Skills and Experience:
- Proven experience in developing e-commerce websites
- Strong knowledge of payment gateways
- Familiarity with SEO best practices
- Good design sense for a modern, clean look
- Experience with product management on e-commerce platforms

Please provide samples of previous work.