Shopify E-commerce Site Development

I need a skilled web developer to create an e-commerce website on Shopify. The store will be used to sell physical products.

Key Requirements:
- Build the site from scratch on Shopify
- User-friendly, responsive design
- Secure payment gateway integration
- SEO optimization
- Product categorization and search functionality

Ideal Skills and Experience:
- Proven experience with Shopify
- Strong portfolio in e-commerce site development
- Knowledge of SEO best practices
- Familiarity with payment gateways and UX/UI design

I'm looking for someone who can deliver a professional, high-quality site within my budget. Please provide examples of previous work and a timeline for completion.