Python Developer for Shopify App

I am looking for an experienced Python backend developer to build an internal application for my Shopify store. My business imports very large supplier catalogs (CSV files) from multiple motorcycle parts suppliers. The application must import these catalogs, compare changes (price, stock, new products, discontinued products), store the data in a database and synchronize Shopify through the Admin API. The application must preserve all manual edits already made in Shopify, including SEO descriptions, images, titles and custom content. This is the first phase of a long-term project. Future versions will include automatic categorization, AI-powered product descriptions, compatibility management and advanced automation. I am looking for someone with strong experience in Python, PostgreSQL, Shopify Admin API and processing large datasets.