Shopify E-commerce Website Development

I'm looking for a skilled web developer to create a comprehensive e-commerce website on Shopify. The site will need to feature:

- Catalogs and Product Categories
- Payment Gateway Integration
- Shopping Carts

I need assistance in selecting an appropriate theme for the store, as well as implementing a 'classic and elegant' design style.

Ideal skills and experience for the job include:
- Proficiency in Shopify development
- Expertise in e-commerce website design and implementation
- Experience with integrating payment gateways and shopping carts
- Knowledge of selecting and customizing Shopify themes
- Strong understanding of 'classic and elegant' design aesthetics