High-Traffic E-commerce Site for Digital Products

I'm looking to build a streamlined e-commerce website to sell digital products. The site should be user-friendly, support high traffic, and include:

- Product search and filtering
- Payment gateway integration
- User account management

Ideal skills and experience:
- Proven experience in developing high-traffic e-commerce websites
- Strong knowledge of digital product distribution
- Expertise in payment gateway integration
- UX/UI design skills for an intuitive user experience

Please share your portfolio and relevant project experience.