diff --git a/README.md b/README.md
index e8267b183..f113289d4 100644
--- a/README.md
+++ b/README.md
@@ -70,6 +70,7 @@ En local, un utilisateur de test est créé automatiquement, avec les identifian
     WarnExpiringDossiersJob.set(cron: "0 0 1 * *").perform_later
     GestionnaireEmailNotificationJob.set(cron: "0 10 * * 1,2,3,4,5,6").perform_later
     PurgeUnattachedBlobsJob.set(cron: "0 0 * * *").perform_later
+    OperationsSignatureJob.set(cron: "0 6 * * *").perform_later
 
 ### Voir les emails envoyés en local
 
diff --git a/app/jobs/operations_signature_job.rb b/app/jobs/operations_signature_job.rb
new file mode 100644
index 000000000..092aec740
--- /dev/null
+++ b/app/jobs/operations_signature_job.rb
@@ -0,0 +1,15 @@
+class OperationsSignatureJob < ApplicationJob
+  queue_as :cron
+
+  def perform(*args)
+    last_midnight = Time.zone.today.beginning_of_day
+    operations_by_day = BillSignatureService.grouped_unsigned_operation_until(last_midnight)
+    operations_by_day.each do |day, operations|
+      begin
+        BillSignatureService.sign_operations(operations, day)
+      rescue
+        raise # let errors show up on Sentry and delayed_jobs
+      end
+    end
+  end
+end