diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..9877e98
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,34 @@
+name: Build
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  build-windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Zig
+        uses: mlugg/setup-zig@v2
+        with:
+          version: master # pin to a specific version once stable
+
+      - name: Verify LLVM
+        run: |
+          & "C:\Program Files\LLVM\bin\llvm-config.exe" --version
+
+      - name: Build
+        run: zig build -Dstatic-llvm -Dllvm-prefix="C:\Program Files\LLVM"
+
+      - name: Test
+        run: zig build test -Dstatic-llvm -Dllvm-prefix="C:\Program Files\LLVM"
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: sx-windows-x86_64
+          path: zig-out/bin/