diff --git a/requirements.txt b/requirements.txt
index 1124e79..f2db147 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,4 +13,5 @@ uda
 zarr
 rich
 pydantic
+s5cmd
 # git+ssh://git@git.ccfe.ac.uk/MAST-U/mastcodes.git@release/1.3.10#subdirectory=uda/python
diff --git a/src/upload.py b/src/upload.py
new file mode 100644
index 0000000..7c77d5e
--- /dev/null
+++ b/src/upload.py
@@ -0,0 +1,44 @@
+import os
+import shutil
+import subprocess
+
+from src.config import UploadConfig
+from src.log import logger
+
+
+class UploadS3:
+    def __init__(self, config: UploadConfig, mode: str = "s5cmd"):
+        self.config = config
+        self.mode = mode
+
+    def upload(self, local_file: str, remote_file: str):
+        logger.info(f'Uploading "{local_file}" to "{remote_file}"')
+        self.upload_s5cmd(local_file, remote_file)
+        # clean up local file
+        shutil.rmtree(local_file)
+
+    def upload_s5cmd(self, local_file, remote_file):
+        env = os.environ.copy()
+
+        args = [
+            "s5cmd",
+            "--credentials-file",
+            self.config.credentials_file,
+            "--endpoint-url",
+            self.config.endpoint_url,
+            "cp",
+            "--acl",
+            "public-read",
+            str(local_file),
+            str(remote_file),
+        ]
+
+        logger.debug(" ".join(args))
+
+        subprocess.run(
+            args,
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.STDOUT,
+            env=env,
+            check=True,
+        )
diff --git a/src/workflow.py b/src/workflow.py
index 254bf02..9465005 100644
--- a/src/workflow.py
+++ b/src/workflow.py
@@ -1,4 +1,5 @@
 import traceback
+from pathlib import Path
 from typing import Optional
 
 from dask import config
@@ -9,6 +10,7 @@
 from src.load import loader_registry
 from src.log import logger
 from src.pipelines import pipelines_registry
+from src.upload import UploadS3
 from src.writer import dataset_writer_registry
 
 
@@ -31,28 +33,26 @@ def __call__(self, shot: int):
         if self.verbose:
             logger.setLevel("DEBUG")
 
+        writer_config = self.config.writer
+        self.writer = dataset_writer_registry.create(
+            writer_config.type, **writer_config.options
+        )
+        self.loader = loader_registry.create("uda")
+        self.pipelines = pipelines_registry.create(self.facility)
+
         try:
             self.create_dataset(shot)
             self.upload_dataset(shot)
-            self.cleanup(shot)
             logger.info(f"Done shot #{shot}")
         except Exception as e:
             logger.error(f"Failed to run workflow with error {type(e)}: {e}\n")
             logger.debug(traceback.print_exception(e))
 
     def create_dataset(self, shot: int):
-        writer_config = self.config.writer
-        writer = dataset_writer_registry.create(
-            writer_config.type, **writer_config.options
-        )
-
-        loader = loader_registry.create("uda")
-        pipelines = pipelines_registry.create(self.facility)
-
         builder = DatasetBuilder(
-            loader,
-            writer,
-            pipelines,
+            self.loader,
+            self.writer,
+            self.pipelines,
             self.include_sources,
             self.exclude_sources,
         )
@@ -63,8 +63,12 @@ def upload_dataset(self, shot: int):
         if self.config.upload is None:
             return
 
-    def cleanup(self, shot: int):
-        pass
+        file_name = f"{shot}.{self.writer.file_extension}"
+        local_file = self.config.writer.options["output_path"] / Path(file_name)
+        remote_file = f"{self.config.upload.base_path}/"
+
+        uploader = UploadS3(self.config.upload)
+        uploader.upload(local_file, remote_file)
 
 
 class WorkflowManager: