Settings restructure
About 500 settings into 42 modules, with the categorization and UI designed by me. No option was removed or renamed, so an existing marketplace upgraded without a single configuration changing under it.

Multivendor marketplace plugin for WooCommerce; I ran it as PM for three years
About 500 settings into 42 modules, with the categorization and UI designed by me. No option was removed or renamed, so an existing marketplace upgraded without a single configuration changing under it.
Tier based commissions, a refund pipeline that splits refunds correctly across vendors, and coupons revamped around the new commission and refund logic. The result is one coherent reporting system that is fair to the marketplace owner, the vendors and the customer.
First print on demand integration for multivendor WordPress (Printful), so vendors can sell print-on-demand products.
Buyers request and negotiate quotes with vendors.
A dynamic form manager for product editing, so marketplace owners design their own product form.
These are the things I shipped.