Shopify Store Development

I'm looking for an experienced Shopify developer to create a comprehensive online store for me. The store will feature more than 200 physical products.

Key Requirements:
- Set up a user-friendly, visually appealing online store
- Organize and list over 200 physical products
- Implement secure payment gateways
- Ensure mobile responsiveness
- Optimize for SEO

Ideal Skills and Experience:
- Proven Shopify development experience
- Strong design skills
- Knowledge of SEO and payment integration
- Ability to manage large product inventories

Please provide examples of previous work and estimated timelines.