Create a Custom Sales Website

I'm seeking an experienced web developer to create a website focused on selling products or services.

Key Requirements:
- E-commerce functionality is essential.
- Custom integration with selling platforms is a plus (Shopify, WooCommerce, Magento).
- User-friendly design for seamless navigation.
- Secure payment gateway integration.
- Mobile-responsive layout.
- SEO optimization to enhance visibility.

Ideal Skills and Experience:
- Proven track record in developing e-commerce websites.
- Expertise in integrating various selling platforms.
- Strong design skills with a focus on user experience.
- Knowledge of SEO best practices.
- Familiarity with secure payment systems.

Please share your portfolio and relevant experience.