add_shortcode('user_role', function() {
  global $wp_roles;
  if( is_user_logged_in() ) {
    $user = wp_get_current_user();
    $roles = ( array ) $user->roles;
    echo '<span>';
    foreach( $roles as $role ){
      echo  $wp_roles->roles[ $role ]['name'] ;
    }
  }
});