E-commerce Website Development

I'm seeking an experienced web developer to create an e-commerce site for selling physical goods. The website should primarily facilitate customer accounts.

Key requirements include:
- User-friendly interface
- Secure payment gateway integration
- Robust customer account management
- Mobile responsiveness
- SEO optimization

Ideal candidates should have:
- Proven portfolio in e-commerce sites
- Strong knowledge of security protocols
- Experience with SEO and UX/UI design
- Proficiency in relevant web development technologies