dm_display_wpjm_categories.php

// Shortcode for showing job categories
function dm_display_wpjm_categories () {
  $terms = get_terms( array('taxonomy' => 'job_listing_category',
                            'hide_empty' => false,));

  // begin output buffering
  ob_start();

  if ( ! empty( $terms ) && ! is_wp_error( $terms ) ){
    echo '<ul class="job-categories-wrapper">';
    foreach ( $terms as $term ) {
      echo '<li>' . '<a class="avia-button avia-color-theme-color avia-size-label" href="' . esc_url( get_term_link( $term ) ) . '">' . $term->name . '</a></li>';
    }
    echo '</ul>';
  }

  // end output buffering, grab the buffer contents, and empty the buffer
  return ob_get_clean();
}