diff --git a/.github/tests.json b/.github/tests.json
index 384dec13..0e7e96d0 100644
--- a/.github/tests.json
+++ b/.github/tests.json
@@ -57,5 +57,24 @@
                 "value3"
             ]
         }
+    },
+    {
+        "hardwareConfig": {
+            "endpointConfig": {
+                "gpuIds": "ADA_24,AMPERE_16,AMPERE_24,AMPERE_48,AMPERE_80",
+                "name": "runpod-python E2E Test - Serverless Core"
+            },
+            "templateConfig": {
+                "env": [
+                    {
+                        "key": "RUNPOD_USE_CORE",
+                        "value": "true"
+                    }
+                ]
+            }
+        },
+        "input": {
+            "mock_return": "this worked!"
+        }
     }
 ]
diff --git a/runpod/serverless/core.py b/runpod/serverless/core.py
index 6c9f9a6c..7074d7ff 100644
--- a/runpod/serverless/core.py
+++ b/runpod/serverless/core.py
@@ -170,7 +170,7 @@ def finish_stream(self, job_id: str) -> bool:
 
 
 # -------------------------------- Process Job ------------------------------- #
-def _process_job(handler: Callable, job: Dict[str, Any]) -> Dict[str, Any]:
+async def _process_job(handler: Callable, job: Dict[str, Any]) -> Dict[str, Any]:
     """ Process a single job. """
     hook = Hook()
 
@@ -207,11 +207,11 @@ async def run(config: Dict[str, Any]) -> None:
     while True:
         jobs = hook.get_jobs(max_concurrency, max_jobs)
 
-        if len(jobs) == 0:
+        if len(jobs) == 0 or jobs is None:
             continue
 
         for job in jobs:
-            asyncio.create_task(_process_job(handler, job))
+            asyncio.create_task(_process_job(handler, job), name=job['id'])
             await asyncio.sleep(0)
 
         await asyncio.sleep(0)
@@ -219,6 +219,9 @@ async def run(config: Dict[str, Any]) -> None:
 
 def main(config: Dict[str, Any]) -> None:
     """Run the worker in an asyncio event loop."""
+    if config.get('handler') is None:
+        raise ValueError("config must contain a handler function")
+
     try:
         work_loop = asyncio.new_event_loop()
         asyncio.ensure_future(run(config), loop=work_loop)