E-commerce Website Development for Startup

I'm looking to hire an experienced web developer to build an e-commerce website for my startup company. The primary goal of the website is to sell our physical products.

Key Requirements:
- User-friendly interface
- Secure shopping cart feature
- Mobile-responsive design
- SEO optimization

Ideal Skills and Experience:
- Proven experience in developing e-commerce websites
- Strong knowledge of shopping cart integration
- Familiarity with SEO best practices
- Ability to create mobile-responsive designs

Please provide samples of your previous work and a brief outline of your development process.