i am using wp job manager plugin and i am trying to list on the frontpage only the twelve job categories according to the jobs they having. The job categories having more jobs go first. I managed to list the job categories with the above code but the problem is that the sorting and the number of categories not working as i expected. Any suggestions?

<?php  echo '<ul class="job-category-list">'; ?>
            <?php foreach ( get_terms( array(
                                      'taxonomy' => 'job_listing_category',
                                     ) ) as $cat): 
            ?>
       <?php  $the_query = new WP_Query( array(
                                        'post_type'      => 'job_listing',
                                        'post_status'    => 'publish',
                                        'posts_per_page' => '12',
                                        'orderby'        => 'tag_count',
                                        'tax_query' => array(
                                         array(
                                              'taxonomy' => 'job_listing_category',
                                              'field'    => 'term_id',
                                              'terms'    => $cat->term_id
                                                          )
                                             )
                                        ) );
             $count = $the_query->found_posts;
        ?>   
           <?php echo '<li><a href="'.get_term_link($cat).'" title="'.esc_attr($cat->name).'">'.$cat->name.'</a>&nbsp;('.( $count ).')</li>'; 

        ?>
            <?php endforeach; ?>
            <?php echo '</ul>'; ?>`