Mobile-Friendly E-Commerce Site Development

I need a basic e-commerce website to sell physical products, primarily viewed on mobile devices. It needs to be mobile-friendly and include single payment gateway integration.

Essential features should include:
- Must be mobile-friendly
- Single payment gateway integration

The ideal freelancer should have experience in:
- Designing and developing mobile-responsive e-commerce websites
- Implementing payment gateways
- User-friendly navigation and layout design

Please provide samples of previous work.