Simple script that filters trello cards by assignee.

trello-card-filter-by-assignee.js

var myInitials = 'PC';
jQuery('.list-card').each(function(i, item) {
  var $item = jQuery(item);
  $item.find('.member').each(function(j, member) {
    var $member = jQuery(member);
    if ($member.text() !== myInitials) {
      $item.remove();
    }
  })
});