Comprehensive E-commerce Sales Setup

I'm looking to establish a robust e-commerce platform that can house a wide range of products. The store should be designed for high sales conversions and easy customer navigation.

Key Requirements:
- E-commerce Platform: I haven't decided on the platform yet, but it should be highly optimized for sales and product management.
- Product Range: My store will cater to a diverse range of products, including clothing, electronics, and home decor. The website should be able to handle multiple product categories and variations.
- Promotions and Discounts: While I'm unsure about the specifics of the promotions I'll be offering, the website should have the capabilities to seamlessly manage various discount schemes.

Ideal Skills and Experience:
- Proficiency in building e-commerce platforms on Shopify, WooCommerce, or Magento.
- Previous experience creating e-commerce sites with a broad product range.
- Proven track record in designing websites that optimize for sales and conversions.
- Familiarity with setting up and managing promotion and discount systems on e-commerce platforms.

I'm open to suggestions that can help enhance the user experience of the site and maximize sales.