diff --git a/.github/workflows/backend.yml b/.github/workflows/backend.yml
new file mode 100644
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--- /dev/null
+++ b/.github/workflows/backend.yml
@@ -0,0 +1,32 @@
+name: Backend CI
+
+on:
+  pull_request:
+    paths:
+      - 'backend/**'
+
+jobs:
+  backend-check:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install backend dependencies
+        run: npm install
+        working-directory: backend
+
+      - name: Start backend briefly
+        run: |
+          node backend/server.js &
+          sleep 5
+          kill $! || true
+
+      - name: Run security audit
+        run: npm audit || true
\ No newline at end of file
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