E-commerce Website Development

I'm looking for an experienced web developer to create a professional online store for my digital products.

Key Requirements:
- User-friendly interface
- Secure payment gateway integration
- Mobile-responsive design
- SEO optimization
- Easy product upload and management system

Ideal Skills:
- Proven experience in e-commerce website development
- Strong understanding of UX/UI principles
- Proficient in SEO and payment gateway integration
- Knowledge of digital product management

Please provide examples of previous work and a detailed plan.