E-commerce Site for Digital Products video

I'm seeking an experienced web developer to create an e-commerce website dedicated to selling digital products. The site should be user-friendly, secure, and optimized for search engines.

Key Requirements:
- E-commerce functionality to handle digital product sales.
- User account management.
- Secure payment gateway integration.
- Search engine optimization (SEO).
- Mobile-responsive design.
- Easy-to-navigate interface.

Ideal Skills & Experience:
- Proven experience in e-commerce website development.
- Strong knowledge of SEO best practices.
- Familiarity with secure payment gateways.
- Experience in creating mobile-responsive designs.
- Portfolio showcasing previous similar projects.

Please provide examples of previous work and a timeline for project completion.