Wordpress Custom coding

General information for the website: http://www.parentcenterhub.org/resources/
Kind of development: Customization of existing website
Description of requirements/features: Please go through my requirement:

I want a search functionality placed on http://www.parentcenterhub.org/resources/ (bit similar to : http://nichcy.org/org-gateway).

The user selects a topic using a dropdown menu and clicks on a Go/Search button. The topics for dropdown will be listed from custom taxomony - "Topics". There is a custom post type - "Repository" created. The posts under repository belong to one or more "Topics". After clcking on Go button , the results page will show all the repository items under the topic selected.

Part 2 - see this plugin - https://facetwp.com/demo/

The results page will have facets for Audience, Language and Format on the side.(similar to plugin, and done by plugin customization)
These custom taxonomies are already created - "Audience", "Language" and "Format". A Repository post also belongs to one or more of these 3 custom taxonomies. So, results page can be filtered further based on "Audience", "Language" and "Format".
This part has to be done by customization of plugin mentioned above.

To sum up:
The Repository posts are searched based on taxonomy "topics". Then results are filtered based on taxonomies - "Audience", "Language" and "Format".

This is an urgent project and needs to be done within 24 hours. Please send your proposal with cost involved. I am looking for someone who can promise to deliver the job. Price is not the primary deciding factor.

Note: I run a web development agency and such similar works keep coming up from overseas clients. Hence, I am also looking to build a long term relationship with a freelancer. Thanks.
Similar urls: http://nichcy.org/org-gateway
Extra notes: I will provide website access details and plugin documentation to the selected person.