E-commerce Site on Shopify

I need a skilled developer to build a full e-commerce website on Shopify. This site will host a variety of products and needs to be user-friendly, visually appealing, and fully functional.

Key Requirements:
- Must be built on Shopify
- Responsive design for mobile and desktop
- Easy navigation and search functionality
- Secure payment gateway integration
- SEO optimization

Ideal Skills:
- Proficiency in Shopify
- Strong background in HTML5, CSS3, and JavaScript
- Experience in designing and developing e-commerce websites
- Attention to detail and strong problem-solving skills

Please share your portfolio and relevant experience.