diff --git a/src/integrations/supabase/types.ts b/src/integrations/supabase/types.ts
index f1abf81c..299922a9 100644
--- a/src/integrations/supabase/types.ts
+++ b/src/integrations/supabase/types.ts
@@ -2173,6 +2173,10 @@ export type Database = {
       [_ in never]: never
     }
     Functions: {
+      calculate_submission_priority: {
+        Args: { submission_id: string }
+        Returns: number
+      }
       can_approve_submission_item: {
         Args: { item_id: string }
         Returns: boolean
@@ -2201,6 +2205,15 @@ export type Database = {
         Args: Record<PropertyKey, never>
         Returns: boolean
       }
+      claim_next_submission: {
+        Args: { lock_duration?: unknown; moderator_id: string }
+        Returns: {
+          priority: number
+          submission_id: string
+          submission_type: string
+          waiting_time: unknown
+        }[]
+      }
       cleanup_expired_sessions: {
         Args: Record<PropertyKey, never>
         Returns: undefined
diff --git a/supabase/migrations/20251006143508_13e7404e-c399-47f5-af33-e1713a02f469.sql b/supabase/migrations/20251006143508_13e7404e-c399-47f5-af33-e1713a02f469.sql
new file mode 100644
index 00000000..4497b39c
--- /dev/null
+++ b/supabase/migrations/20251006143508_13e7404e-c399-47f5-af33-e1713a02f469.sql
@@ -0,0 +1,90 @@
+-- Function to calculate dynamic submission priority
+CREATE OR REPLACE FUNCTION calculate_submission_priority(
+  submission_id UUID
+) RETURNS INTEGER 
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+DECLARE
+  submission_age INTERVAL;
+  submission_type TEXT;
+  escalated BOOLEAN;
+  calculated_priority INTEGER := 3;
+BEGIN
+  SELECT 
+    NOW() - submitted_at,
+    content_submissions.submission_type,
+    content_submissions.escalated
+  INTO submission_age, submission_type, escalated
+  FROM content_submissions
+  WHERE id = submission_id;
+  
+  -- Base priority by type
+  IF submission_type = 'photo' THEN
+    calculated_priority := 2;
+  ELSIF submission_type IN ('park', 'ride') THEN
+    calculated_priority := 4;
+  ELSIF submission_type IN ('manufacturer', 'operator', 'designer', 'property_owner') THEN
+    calculated_priority := 3;
+  END IF;
+  
+  -- Boost for age (1 point per 24 hours waiting)
+  calculated_priority := calculated_priority + (EXTRACT(EPOCH FROM submission_age) / 86400)::INTEGER;
+  
+  -- Escalated items get max priority
+  IF escalated THEN
+    calculated_priority := 10;
+  END IF;
+  
+  -- Cap at 10
+  RETURN LEAST(calculated_priority, 10);
+END;
+$$;
+
+-- Function to claim next submission from queue with proper locking
+CREATE OR REPLACE FUNCTION claim_next_submission(
+  moderator_id UUID,
+  lock_duration INTERVAL DEFAULT '15 minutes'
+) RETURNS TABLE (
+  submission_id UUID,
+  submission_type TEXT,
+  priority INTEGER,
+  waiting_time INTERVAL
+)
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+BEGIN
+  -- Update priority for all pending submissions first
+  UPDATE content_submissions
+  SET priority = calculate_submission_priority(id)
+  WHERE status IN ('pending', 'partially_approved')
+    AND (assigned_to IS NULL OR locked_until < NOW());
+  
+  -- Claim next item with row-level lock
+  RETURN QUERY
+  UPDATE content_submissions
+  SET 
+    assigned_to = moderator_id,
+    assigned_at = NOW(),
+    locked_until = NOW() + lock_duration,
+    first_reviewed_at = COALESCE(first_reviewed_at, NOW())
+  WHERE id = (
+    SELECT id FROM content_submissions
+    WHERE status IN ('pending', 'partially_approved')
+      AND (assigned_to IS NULL OR locked_until < NOW())
+    ORDER BY 
+      priority DESC,
+      submitted_at ASC
+    LIMIT 1
+    FOR UPDATE SKIP LOCKED
+  )
+  RETURNING 
+    id,
+    content_submissions.submission_type,
+    content_submissions.priority,
+    NOW() - submitted_at;
+END;
+$$;
\ No newline at end of file