E-commerce Site for Digital Products

I'm looking for an experienced developer to build an online store aimed at generating sales. The platform will be dedicated to selling digital products.

Key Requirements:
- User-friendly interface
- Secure payment gateways
- Efficient product categorization and search functionality
- Mobile responsiveness
- SEO optimization

Ideal Skills and Experience:
- Proven experience in building e-commerce websites, specifically for digital products
- Strong understanding of UI/UX design principles
- Expertise in integrating secure payment systems
- Knowledge of SEO best practices

Please provide a portfolio of similar projects completed. Looking forward to your bids!