Business Website Design for Sales

I'm looking for an experienced web designer to create a business website aimed at selling our products/services.

Key requirements:
- User-friendly interface
- Mobile responsiveness
- Secure payment gateway integration
- SEO optimization

Ideal skills and experience:
- Proven portfolio in designing sales-oriented business websites
- Expertise in UX/UI design
- Knowledge of SEO best practices
- Experience with payment integrations

Please share relevant work samples with your bids.