Shopify Store Rebuild & Integrations

Looking for an experienced developer who knows Shopify, eCommerce, API integration, and Google App Engine. I need someone who can work on Shopify store customization, connect third-party services through APIs, and handle backend tasks using Google App Engine... (Budget: $30 - $250 USD, Jobs: API Development, API Integration, eCommerce, Google App Engine, HTML, PHP, Shopify, Shopify Development, Web Development, Website Design)