diff --git a/src/backend/core.clj b/src/backend/core.clj
deleted file mode 100644
index 7ae4594..0000000
--- a/src/backend/core.clj
+++ /dev/null
@@ -1 +0,0 @@
-(ns backend.core)
diff --git a/src/main/backend/core.clj b/src/main/backend/core.clj
new file mode 100644
index 0000000..2787ef8
--- /dev/null
+++ b/src/main/backend/core.clj
@@ -0,0 +1,12 @@
+(ns backend.core
+  (:use ring.adapter.jetty))
+
+(defn handler [request]
+  {:status 200
+   :headers {"Content-Type" "text/plain"}
+   :body "Hello World"})
+
+(defn -main
+  [& args]
+  (run-jetty handler {:port 3000
+                      :join? false}))
diff --git a/src/frontend/app.cljs b/src/main/frontend/app.cljs
similarity index 100%
rename from src/frontend/app.cljs
rename to src/main/frontend/app.cljs