diff --git a/.github/actions/install-nix/action.yml b/.github/actions/install-nix/action.yml
new file mode 100644
index 0000000..778cf99
--- /dev/null
+++ b/.github/actions/install-nix/action.yml
@@ -0,0 +1,16 @@
+name: install-nix
+description: Install Nix with flakes enabled and pre-warm the repository's flake devShell
+runs:
+  using: composite
+  steps:
+    - name: Install Nix (with flakes)
+      uses: cachix/install-nix-action@v31
+      with:
+        extra_nix_config: |
+          experimental-features = nix-command flakes
+    - name: Pre-warm flake devShell
+      run: |
+        # Use the repository's `flake.nix` devShell to fetch dependencies.
+        # This speeds up later `nix develop` invocations in workflow steps.
+        nix develop --command true
+      shell: bash
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
new file mode 100644
index 0000000..5a86bd7
--- /dev/null
+++ b/.github/workflows/check.yml
@@ -0,0 +1,39 @@
+name: check
+
+"on":
+  workflow_dispatch: {}
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["**"]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Install Nix and pre-warm flake devShell
+        uses: ./.github/actions/install-nix
+
+      - name: Run pre-commit from flake devShell
+        run: |
+          # Use the flake devShell defined in ./flake.nix (x86_64 runner)
+          nix develop --command pre-commit run --all-files
+        shell: bash
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Install Nix and pre-warm flake devShell
+        uses: ./.github/actions/install-nix
+
+      - name: Run build from flake devShell
+        run: |
+          # Use the flake devShell defined in ./flake.nix (x86_64 runner)
+          nix develop --command invoke build
+        shell: bash