E-commerce Website Development

I need a skilled website developer to create an e-commerce platform. The site should be user-friendly, secure, and visually appealing.

Key Requirements:
- Shopping cart functionality
- User account creation and management
- Secure payment gateway integration
- Mobile-responsive design
- SEO optimization

Ideal Skills and Experience:
- Proven experience in developing e-commerce websites
- Proficiency in relevant programming languages and frameworks
- Strong understanding of UX/UI design
- Knowledge of SEO best practices
- Experience with payment gateways

Please provide samples of previous work and a timeline for completion. Looking forward to your proposals!