diff --git a/entity-types/infra-kubernetes_cronjob/definition.yml b/entity-types/infra-kubernetes_cronjob/definition.yml
index 4c3de78c2..92f10a882 100644
--- a/entity-types/infra-kubernetes_cronjob/definition.yml
+++ b/entity-types/infra-kubernetes_cronjob/definition.yml
@@ -11,3 +11,34 @@ goldenTags:
 - k8s.cronjobName
 - k8s.clusterName
 - k8s.namespaceName
+synthesis:
+  rules:
+    # kube-state-metrics data via opentelemetry prometheusReceiver 
+    - compositeIdentifier:
+        separator: ":"
+        attributes:
+          - k8s.cluster.name
+          - namespace
+          - cronjob
+      encodeIdentifierInGUID: true
+      name: cronjob
+      conditions:
+        # kube-state-metrics cronjob prefix
+        - attribute: metricName
+          prefix: kube_cronjob_
+        # identifier attributes
+        - attribute: cronjob
+          present: true
+        - attribute: namespace
+          present: true
+        - attribute: k8s.cluster.name
+          present: true
+        # open telemetry
+        - attribute: newrelic.source
+          value: 'api.metrics.otlp'
+        # if service.name is present, it's a service
+        - attribute: service.name
+          present: false
+        # value added for test entities only
+        - attribute: newrelicOnly
+          value: "true"
\ No newline at end of file