E-Commerce Website for Physical Goods

I'm looking to create an e-commerce website to sell digital goods. This platform will need several key functionalities:
- User authentication
- Payment gateway integration
- Download management

I have a general idea of the design, but I'm open to and in need of suggestions. Therefore, a strong sense of design and experience in creating e-commerce sites is essential.

Ideal skills and experience for the job:
- Extensive experience in web development, particularly e-commerce sites
- Proficiency in creating user-friendly interfaces
- Strong understanding of secure payment gateway integration
- Experience in implementing download management systems
- Creative design skills and ability to provide suggestions based on current trends
- Excellent understanding of user authentication systems