E-commerce Website Development

I'm looking for an experienced web developer to create a comprehensive e-commerce website for selling physical products.

Key requirements include:
- User-friendly interface and seamless navigation
- Secure payment gateway integration
- Mobile responsiveness
- SEO optimization
- Robust product management system
- High-quality, customizable templates

Ideal skills and experience:
- Proven portfolio in e-commerce site development
- Strong knowledge of SEO and UX/UI design
- Experience with payment gateways and security protocols
- Familiarity with CMS platforms like Shopify, WooCommerce, or Magento

Please provide examples of previous work and your approach to this project.