Listing theme with ability to order by custom field

Hello to all the community!
I am struggling to find a Listing Theme for word press with the ability to show items by a custom field order. I have a community of photographers and we run a photo contest. For me is crucial to have the ability to assign to each item (photographer) a number that represents the number of awarded photo.
I then need to order results by number of awarded photos. I have looked many many listing themes but could not find one with this functionality.

If someone could help me it would be greatly appreciated.