Add the Featured Company fields to the admin

function.php

/* Add the Featured Company fields to the admin */
add_filter( 'job_manager_job_listing_data_fields', 'admin_add_featured_company_field' );

function admin_add_featured_company_field( $fields ) {
	global $post;

	$current_user = wp_get_current_user();

	if ( $current_user->has_cap( 'manage_job_listings' ) ) {
		$fields['_company_featured'] = array(
			'label'       => __( 'Featured Company', 'wp-job-manager' ),
			'type'        => 'checkbox',
			'description' => __( 'Featured Companies will be set, and can be styled differently.', 'wp-job-manager' ),
			'priority'    => 8
		);
	}

  return $fields;
}