Basic Classifieds Function to Existing WordPress Theme

We would like an experienced developer to add a small subset of mandatory functions for Classified ads to our existing WordPress Theme. You will leverage on our existing code base, architecture and designs. We will provide solution designs and wireframes. You will need your own AMP setup for development. Requirements: 1. Categories Map (see [login to view URL]) a. This will be the first page Users will see when they navigate to classifieds and they should be able to see all the categories that have a listing displayed in a tree structure b. The map should show a count next to the top level categories c. An “Advanced” link should be added to the search box which will open up the advanced search page (see Requirement 2) d. When Users click on a particular category link, Users should be navigated to the listing page with paginated view of all the listings that belong to that particular category. This should be sorted by most recent. 2. Advanced Search (see [login to view URL]) a. Users need to be able to search all the classifieds and be able to specify a number of Custom Meta fields to filter the result by b. The “Search Term” field should search all terms including Title, Excerpt, Description and body text. c. User need to be able to filter the result by all related custom taxonomy. Currently this is Category, Location and Condition. The function should be extensible if new taxonomy is added in the future. d. User need to be able to filter by the Custom Meta Fields defined in [login to view URL] (/external/[login to view URL]) but only those that have “searchable” value equals true. e. The search should initiate when Users click on “Advanced Search”. The page should refresh and show a list of all the listings that match selected criterion. 3. Refine Search Widget (see [login to view URL]) a. Create a WordPress Widget that shows all unique categories returned in the current search query. b. The widget can be placed anywhere on the page so some basic scaling is required c. When Users click on a particular category/taxonomy on the widget the CURRENT search result should be filtered to show only listings from that category/taxonomy d. The widget needs to accommodate more Taxonomy in the future. Currently we have Category, Location and Condition. e. There should be a count of number of listings in that particular category/taxonomy in brackets. This applies for both root category and child categories.