Build an NGO E-Commerce Website

I need a skilled web developer to create an e-commerce website for my NGO. The site should be designed to facilitate donations and the sale of NGO merchandise.

Essential features include:
- Product listings
- Shopping cart
- Payment gateway

Ideal skills and experience:
- Proven experience in developing e-commerce websites, preferably on Shopify, WooCommerce, or Magento.
- Strong understanding of payment gateway integration.
- Ability to create user-friendly product listings and shopping cart functionalities.
- Experience in designing for NGOs or similar organizations is a plus.

Please provide a portfolio with relevant work.