diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 80063ce2..513764d5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,22 +1,114 @@
-# Build workflow
-name: Build
+# Build & lint checks workflow
+name: Build & Lint Checks
 
-on: [pull_request, workflow_dispatch]
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - main
 
 permissions:
   contents: read
 
 jobs:
+  build_tip_of_tree_v12:
+    name: Build test (against tip-of-tree core v12)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout experimentation plugin
+        uses: actions/checkout@v4
+        with:
+          path: main
+
+      - name: Checkout core Blockly
+        uses: actions/checkout@v4
+        with:
+          repository: 'google/blockly'
+          ref: 'rc/v12.0.0'
+          path: core-blockly
+
+      - name: Use Node.js 20.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+
+      - name: NPM install
+        run: |
+          cd main
+          npm install
+          cd ..
+          cd core-blockly
+          npm install
+          cd ..
+
+      - name: Link latest Blockly v12
+        run: |
+          cd core-blockly
+          npm run package
+          cd dist
+          npm link
+          cd ../../main
+          npm link blockly
+          cd ..
+
+      - name: Verify build
+        run: |
+          cd main
+          npm run build
+
   build:
+    name: Build test (against pinned v12)
+    # Don't run pinned version checks for PRs.
+    if: ${{ !github.base_ref }}
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
+      - name: Checkout experimentation plugin
         uses: actions/checkout@v4
-      - name: Setup Node
+
+      - name: Use Node.js 20.x
         uses: actions/setup-node@v4
         with:
-          node-version: latest
-          cache: 'npm'
-      - run: npm ci
-      - run: npm run build
-      - run: npm run lint
+          node-version: 20.x
+
+      - name: NPM install
+        run: npm install
+
+      - name: Verify build
+        run: npm run build
+
+  lint:
+    name: Eslint check
+    timeout-minutes: 5
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Use Node.js 20.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+
+      - name: NPM install
+        run: npm install
+
+      - name: Eslint check format
+        run: npm run lint
+
+  format:
+    name: Prettier check
+    timeout-minutes: 5
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Use Node.js 20.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+
+      - name: NPM install
+        run: npm install
+
+      - name: Prettier check format
+        run: npm run format:check
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 00000000..b3561226
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,93 @@
+# Workflow for running automated tests.
+
+name: Automated Tests
+
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  webdriverio_tests_tip_of_tree_v12:
+    name: WebdriverIO tests (against tip-of-tree core v12)
+    timeout-minutes: 10
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+
+    steps:
+      - name: Checkout experimentation plugin
+        uses: actions/checkout@v4
+        with:
+          path: main
+
+      - name: Checkout core Blockly
+        uses: actions/checkout@v4
+        with:
+          repository: 'google/blockly'
+          ref: 'rc/v12.0.0'
+          path: core-blockly
+
+      - name: Use Node.js 20.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+
+      - name: NPM install
+        run: |
+          cd main
+          npm install
+          cd ..
+          cd core-blockly
+          npm install
+          cd ..
+
+      - name: Link latest Blockly v12
+        run: |
+          cd core-blockly
+          npm run package
+          cd dist
+          npm link
+          cd ../../main
+          npm link blockly
+          cd ..
+
+      - name: Run tests
+        run: |
+          cd main
+          npm run test
+
+  webdriverio_tests:
+    name: WebdriverIO tests (against pinned v12)
+    # Don't run pinned version checks for PRs.
+    if: ${{ !github.base_ref }}
+    timeout-minutes: 10
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+
+    steps:
+      - name: Checkout experimentation plugin
+        uses: actions/checkout@v4
+
+      - name: Use Node.js 20.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+
+      - name: NPM install
+        run: npm install
+
+      - name: Run tests
+        run: npm run test
diff --git a/package.json b/package.json
index 9352f8a7..b8f6cbb1 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "ghpages": "webpack",
     "clean": "blockly-scripts clean",
     "lint": "eslint .",
+    "lint:fix": "eslint . --fix",
     "format": "prettier --write .",
+    "format:check": "prettier --check .",
     "predeploy": "blockly-scripts predeploy",
     "prepublishOnly": "npm login --registry https://wombat-dressing-room.appspot.com",
     "start": "blockly-scripts start",