Custom post type search with custom field filters for custom Wordpress theme

Got a lot of talent & experience with Wordpress theme development? We need you to code a modular advanced search snippet for custom Wordpress themes we build. Details: - Search block needs to be able to be placed on any page - Needs to be able to search any post or posts within a specific set of parameters (eg: custom post types, categories) - Needs to feature fields that can correspond to either standard or custom fields in the post - Custom fields would be created by us using either the ACF plugin ([login to view URL]) or the CMB2 library ([login to view URL]). - If fields are left blank, no error should occur, rather search should not include blank fields in the functionality - Code needs to be clearly commented so we know where to alter as per the theme's needs - We would need you to go through the code with us upon completion so we can apply it to our various themes correctly. Tell us why you're an excellent candidate for this project. Please provide sites or components you've developed that have features on the same level as this project. If we're happy working with you and with the results, we would certainly consider working with you for future projects.