WooCommerce developer for marketplace API sync fix (PHP, bulk API)

We have a custom WordPress plugin that syncs WooCommerce products (WPML, multi-currency) to a European marketplace through its bulk API. After recent updates, products on the marketplace lost some of their data and were sent back for validation. We need an experienced developer to find the cause and fix it safely. Your job: Review the plugin code and find the root cause Fix it and test the fix on a few products, verifying the results on the marketplace side Restore the affected products in controlled batches and check the batch results Requirements: Proven experience with marketplace API integrations (Mirakl, Amazon SP-API, Allegro, eBay, or similar) Experience with async bulk APIs (submit batch → check status) WooCommerce, WPML, PHP, MySQL A careful working style: you test on a few products before any mass update Code and details are shared with shortlisted candidates. Please answer these questions: Which marketplace APIs have you integrated with, and what did you build or fix? A bulk update call returned success, but hours later the products were missing fields. What would you check first? Can you start this weekend? Budget: fixed price, $150–300. Milestone 1: root cause found and fix tested on 5 products. Milestone 2: full rollout.