Membership Directory Filter by Fields

I want to add filters to my membership directory so users can sort/filter by fields I have setup in their profiles. Is there a plugin for that? Or do I need to custom-code this myself? I have already modified the directory and have a custom template setup, I just need to add the filtering, or a plugin. :slight_smile:

You can the current directory here: http://tacr.wpengine.com/members/