Contributors optimization

diff --git a/pontoon/base/templates/widgets/contributors.html b/pontoon/base/templates/widgets/contributors.html
index e01eac2..d5fe4a5 100644
--- a/pontoon/base/templates/widgets/contributors.html
+++ b/pontoon/base/templates/widgets/contributors.html
@@ -30,7 +30,7 @@
             <img class="rounded" src="{{ contributor.gravatar_url(44) }}">
             <p class="name">{{ contributor.name_or_email }}</p>
           </a>
-          <p class="rights">{{ contributor.rights }}</p>
+          <p class="rights">{{ contributor.role }}</p>
         </td>
         <td class="stats">
           <div class="details">
diff --git a/pontoon/base/views.py b/pontoon/base/views.py
index 38d41cd..ac46808 100755
--- a/pontoon/base/views.py
+++ b/pontoon/base/views.py
@@ -14,7 +14,7 @@ from dateutil.relativedelta import relativedelta
 from django.conf import settings
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required
-from django.contrib.auth.models import User
+from django.contrib.auth.models import User, Group
 from django.core.exceptions import ValidationError, ImproperlyConfigured
 from django.core.mail import EmailMessage
 from django.core.paginator import Paginator, EmptyPage
@@ -325,7 +325,31 @@ class ContributorsMixin(object):
             period = None
             start_date = None
 
-        context['contributors'] = User.translators.with_translation_counts(start_date, self.contributors_filter(**kwargs))
+        MANAGERS = {}
+        manager_groups = Group.objects.filter(name__endswith='managers').prefetch_related('user_set')
+        for group in manager_groups:
+            for user in group.user_set.all():
+                MANAGERS.setdefault(user, []).append(group.name.split(' ')[0])
+
+        TRANSLATORS = {}
+        translator_groups = Group.objects.filter(name__endswith='translators').prefetch_related('user_set')
+        for group in translator_groups:
+            for user in group.user_set.all():
+                TRANSLATORS.setdefault(user, []).append(group.name.split(' ')[0])
+
+        contributors = User.translators.with_translation_counts(start_date, self.contributors_filter(**kwargs))
+
+        for contributor in contributors:
+            if contributor.is_superuser:
+                contributor.role = 'Admin'
+            elif contributor in MANAGERS:
+                contributor.role = 'Manager for ' + ', '.join(MANAGERS[contributor])
+            elif contributor in TRANSLATORS:
+                contributor.role = 'Translator for ' + ', '.join(TRANSLATORS[contributor])
+            else:
+                contributor.role = 'Contributor'
+
+        context['contributors'] = contributors
         context['period'] = period
         return context