diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..56a183c
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,127 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  go-services:
+    name: Build and test Go services
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        service:
+          - cluster-agent
+          - control-plane/api-gateway
+          - control-plane/autoscaler-controller
+          - control-plane/cluster-manager
+          - control-plane/config-store
+          - control-plane/deployment-manager
+          - control-plane/function-manager
+          - control-plane/skypilot-bridge
+          - control-plane/smart-router
+          - control-plane/tenant-manager
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.22"
+
+      - name: Download dependencies
+        working-directory: ${{ matrix.service }}
+        run: go mod download
+
+      - name: Build
+        working-directory: ${{ matrix.service }}
+        run: go build ./...
+
+      - name: Test
+        working-directory: ${{ matrix.service }}
+        run: go test ./...
+
+  python-skypilot-bridge:
+    name: Lint Python SkyPilot Bridge
+    runs-on: ubuntu-latest
+
+    defaults:
+      run:
+        working-directory: control-plane/skypilot-bridge
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Install Python dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+          pip install ruff mypy pytest
+
+      - name: Lint Python files
+        run: ruff check .
+
+      - name: Type check Python files
+        run: mypy . || true
+
+      - name: Run Python tests
+        run: |
+          if [ -d tests ]; then pytest; else echo "No Python tests found"; fi
+
+  frontend:
+    name: Build React frontend
+    runs-on: ubuntu-latest
+
+    defaults:
+      run:
+        working-directory: frontend
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build frontend
+        run: npm run build
+
+  docker-builds:
+    name: Validate Docker builds
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        service:
+          - cluster-agent
+          - control-plane/api-gateway
+          - control-plane/autoscaler-controller
+          - control-plane/cluster-manager
+          - control-plane/config-store
+          - control-plane/deployment-manager
+          - control-plane/function-manager
+          - control-plane/skypilot-bridge
+          - control-plane/smart-router
+          - control-plane/tenant-manager
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Build Docker image
+        run: docker build -t detoserve-${{ strategy.job-index }} ${{ matrix.service }}
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