WordPress E-commerce Site Development -- 2

I need an experienced WordPress developer to create an e-commerce website for my services.

Key requirements:
- Professional layout and design
- User-friendly shopping cart
- Secure payment gateway integration
- Mobile-responsive design
- SEO optimization

Ideal skills and experience:
- Proven WordPress development expertise
- Strong background in e-commerce sites
- Familiarity with SEO best practices
- Excellent design skills

Please share your portfolio and relevant experience.