New features for Website, Android and iOS.

We need someone that can help us to adding new features for our Classified Website, Android and iOS which the control will be use on plugin integrated with Android and XCode. For this features, you have to build an API for us. You need to understand Custom Post Types, WP-JSON, Woocommerce API, Android Studio and XCode or any API programming language. Adding a new features for Setting Minimum Price by Categories and Bidding Category and Minimum Bidding Raise Price for Seller on Wordpress, Android and iOS. 1.1 Admin have ability to set Minimum Price by Categories and Bidding Category. 1.2 Seller have ability to set Bidding Raise Price for their products. 1.3 Bidder/Buyer have ability to Bids the price in 2 ways, Manual Input and Automatic Bidding. 1.3.1 Manual Input which is using form for Bidder/Buyer to put the price manually, but no less from the Bidding Raise Price on 1.2 1.3.2 Automatic Bidding will be use if Bidder/Buyer want to follow-up current Bidding Raise Price on 1.2. Example as below. * Admin make a new category from Custom Post Types (Classified Ads) * On category, there is an input form for Admin to set minimum price for users to post their ads on the category. * Users which choose the categories to upload their ads, they have to put their minimum price not less than the price which is set by Admin and this minimum price will be appear on the front-end (Website, Android and iOS) * Users have ability to set their Bidding Raise Price for their ads and can't set Minimum Price by Bidding Category. Seller have to follow the Price which has been set by Admin on 1.1. Example Minimum Price by Category and Bidding Category as below: *If Admin set Category A or Bidding Category to $10, users have to put the price start with $10. Example Bidding Raise Price for seller and buyer as below: *Seller have to follow the Minimum Price by Category and Bidding Category which set by Admin (as above example) have to start with that price and only Selelr can set their Bidding Raise Price. *Seller set their Bidding Raise Price to $5. The amount for their product is $15. ($10+$5) If got two Bidders, it will be $20. ($10+5+5) *Everyone can bid the products automatically or manual input. No cent price! Please take note, this is all-in-one job which you need to make it on our Wordpress, Android and iOS.