Shopify E-commerce Website Development

I'm looking for an experienced Shopify developer to create a comprehensive e-commerce website.

Essential requirements include:
- Product listings and categories
- Payment gateway integration
- Customer reviews and ratings

Ideal skills and experience:
- Proficiency in Shopify
- Strong understanding of e-commerce functionalities
- Experience with payment gateway integration
- Ability to implement customer review systems

Please provide a portfolio of previous work and an estimated timeline.