E-commerce Website Development

I'm looking for a skilled web developer to create an engaging e-commerce website. The design should be bright and vibrant, and I'm open to creative concepts since I don't have existing branding or design guidelines.

Key requirements:
- User-friendly navigation
- Secure payment gateway integration
- Mobile-responsive design
- SEO optimization
- High-quality graphics and imagery

Ideal skills and experience:
- Proven portfolio in e-commerce sites
- Strong knowledge of web design principles
- Experience with SEO and mobile optimization
- Proficiency in graphic design

Please share your portfolios and relevant experience.