I can create any custom plugin for Wordpress, which can even include any 3rd part API integration(API integration charges will be extra). Everything you need to add to your Wordpress website – is doable with plugin developed by me.
Create Custom WordPress Plugin from scratch upon requirements
Create Custom Widget upon directions
Plugin for user(public) area
Manage website from admin panel
Custom posts types
Custom search forms
Crawlers with automatic data insert to your website
Custom WP-based CRM
Online store (eCommerce)
Filters of content
PHP/JSON API Expert
CSV import to Wordpress
and practically everything else you can imagine.
Please note: this is an offer for custom plugin development, I'll need detailed task, to understand what do you want to get, and what features/functionality you'd like to have in your plugin.
As it's a custom development, please contact me first, so I could help you determine which package is best for you, and maybe send you a custom offer.