Shopify-Etsy Setup with Print-on-Demand Integration

I need an experienced developer to set up a Shopify store that integrates with Etsy and print-on-demand platforms (Printful, Printify, Gelato).

The store must include:
- Product customization options
- Automated order processing
- Inventory management

Ideal skills and experience:
- Shopify and Etsy integration expertise
- Experience with Printful, Printify, and Gelato
- Strong background in setting up product customization and automated workflows
- Inventory management experience

Looking for a seamless, professional setup. Please include relevant portfolio work.