Register Facets with the excellent FacetWP plugin via PHP

register-facets-in-php.php

<?php
/**
 * Registers the Facets with FacetWP.
 *
 * @param array  $facets The current array of registered facets.
 * @return array $facets The modified array of registered facets.
 */
function hd_utility_add_job_facets( $facets ) {

	// add the job industry facet.
	$facets['job_industry'] = array(
		'name'            => 'job_industry',
		'label'           => __( 'Job Industry', 'hd-utility' ),
		'type'            => 'checkboxes',
		'source'          => 'tax/hd_job_industry',
		'parent_term'     => '', 
		'modifier_type'   => 'off', 
		'modifier_values' => '', 
		'hierarchical'    => 'yes', 
		'show_expanded'   => 'no', 
		'ghosts'          => 'no', 
		'preserve_ghosts' => 'no', 
		'operator'        => 'or', 
		'orderby'         => 'count', 
		'count'           => '-1', 
		'soft_limit'      => '10',
	);

	// return the maybe modified facets.
	return $facets;

}

add_filter( 'facetwp_facets', 'hd_utility_add_job_facets', 10, 1 );