diff --git a/.formatter.exs b/.formatter.exs
new file mode 100644
index 00000000..e9660757
--- /dev/null
+++ b/.formatter.exs
@@ -0,0 +1,3 @@
+[
+  subdirectories: ["rustler_tests", "rustler_mix"]
+]
diff --git a/justfile b/justfile
new file mode 100644
index 00000000..3312ef21
--- /dev/null
+++ b/justfile
@@ -0,0 +1,22 @@
+build:
+    cargo build
+    cd rustler_mix && mix deps.get && mix compile
+
+test:
+    cargo test -q
+    cd rustler_mix && mix deps.get && mix test
+    cd rustler_tests && mix deps.get && mix test
+
+test-all: test
+    cd rustler_mix && ./test.sh
+
+check-format:
+    cargo fmt --all -- --check
+    mix format --check-formatted
+
+format:
+    cargo fmt --all
+    mix format
+
+lint:
+    cargo clippy --all-targets --all-features