diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..9dd8d1db
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,62 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  flutter:
+    name: Flutter analyze & test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Setup Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          # Keep in sync with .fvmrc
+          flutter-version: "3.41.5"
+          channel: "stable"
+          cache: true
+
+      - name: Get Flutter dependencies
+        run: flutter pub get
+
+      - name: Analyze
+        run: flutter analyze
+
+      - name: Run tests
+        run: flutter test
+
+  go:
+    name: Go vet & test
+    runs-on: ubuntu-latest
+
+    defaults:
+      run:
+        working-directory: go_backend
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Setup Go
+        uses: actions/setup-go@v6
+        with:
+          # Keep in sync with release.yml
+          go-version: "1.25.8"
+          cache-dependency-path: go_backend/go.sum
+
+      - name: Vet
+        run: go vet ./...
+
+      - name: Run tests
+        run: go test ./...