diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 994bbe090e3..80a7ac41422 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -49,21 +49,57 @@ jobs:
       - name: install Chrome stable
         run: |
           npx @puppeteer/browsers install chrome@stable
-      - name: Test setup and yarn install
+      - name: Test setup
         run: |
           cp config/ci.config.json config/project.json
-          yarn
       - name: yarn build
         run: yarn build
       - name: Archive build
         if: ${{ !cancelled() }}
         run: |
-          tar -cf build.tar --exclude=.git .
-          gzip build.tar
+          tar -czvf dists.tar.gz $(find packages -name dist -type d)
       - name: Upload build archive
         if: ${{ !cancelled() }}
         uses: actions/upload-artifact@v4
         with:
-            name: build.tar.gz
-            path: build.tar.gz
-            retention-days: ${{ env.artifactRetentionDays }}
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+            name: dists.tar.gz
+            path: dists.tar.gz
+            retention-days: ${{ env.artifactRetentionDays }}
+
+  test-the-rest:
+    name: (bulk) Node.js and Browser (Chrome) Tests
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+    # install Chrome first, so the correct version of webdriver can be installed by chromedriver when setting up the repo
+    - name: install Chrome stable
+      run: |
+        npx @puppeteer/browsers install chrome@stable
+    - name: Download build archive
+      uses: actions/download-artifact@v4
+      with:
+        name: dists.tar.gz
+    - name: Unzip build artifact
+      run: tar xf dists.tar.gz
+    - uses: actions/setup-node@v4
+      with:
+        node-version-file: '.nvmrc'
+    - name: Restore cached node_modules
+      uses: actions/cache@v4
+      id: node_modules
+      with:
+        path: "**/node_modules"
+        key: node_modules-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
+    - run: yarn install --frozen-lockfile
+    - name: Test setup
+      run: |
+        cp config/ci.config.json config/project.json
+    - name: Set start timestamp env var
+      run: echo "FIREBASE_CI_TEST_START_TIME=$(date +%s)" >> $GITHUB_ENV
+    - name: Run unit tests
+      # Ignore auth and firestore since they're handled in their own separate jobs.
+      run: |
+        xvfb-run yarn lerna run --ignore '{firebase-messaging-integration-test,@firebase/auth*,@firebase/firestore*,firebase-firestore-integration-test}' test:ci
+        node scripts/print_test_logs.js
+      env:
+        FIREBASE_TOKEN: ${{ secrets.FIREBASE_CLI_TOKEN }}
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