Professional E-commerce Site Buildup

I'm seeking an experienced web developer to redesign my e-commerce website for selling physical products. The design should be either modern and minimalist or classic and elegant.

Key Requirements:
- User-friendly navigation and search functionality
- Secure payment gateway integration already purchased)
- Mobile-responsive design
- High-quality images and product descriptions
- SEO optimization

Ideal Skills and Experience:
- Proven experience in developing e-commerce websites
- Strong portfolio showcasing classic and elegant designs
- Expertise in integrating payment gateways
- Familiarity with SEO best practices

Please provide samples of your previous work and a brief outline of your approach to this project.