E-commerce Site Development

I'm looking for a skilled web developer to create an e-commerce website. The site will initially list between 1-50 physical products.

Key requirements:
- User-friendly interface
- Secure payment gateway integration
- Product listing and categorization
- Mobile-responsive design
- SEO optimization for better visibility

Ideal skills and experience:
- Proven experience in building e-commerce websites
- Strong knowledge of payment gateways
- Familiarity with SEO best practices
- Proficient in responsive web design

Please share your portfolio and relevant experience.