Shopify Clothing Store Development

I'm looking for an experienced Shopify developer to create a webstore for my clothing brand. The project needs to be completed within a month.

Key requirements:
- User-friendly design
- Mobile responsiveness
- Secure payment gateway integration
- Basic SEO setup

Ideally, you should have:
- Proven experience in Shopify development
- Strong portfolio in clothing brands
- Knowledge of SEO and payment gateways

Please provide a timeline and a portfolio with your bids.