diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 22419da6dc..17ebb3c353 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -74,6 +74,23 @@ jobs:
       - name: Check with Gradle
         run: ./gradlew check --scan --full-stacktrace
 
+      - name: Package (build) APKs for Device UI Tests
+        # TODO(vorburger) Are both the Debug *AND* Release packages actually required for Device UI Tests?
+        # TODO(vorburger) Could building these be parallelized? Can Gradle do that, if invoked differently, or should we parallelize with Bash?
+        run: ./gradlew packageDebugAndroidTest --scan --stacktrace && ./gradlew packageReleaseAndroidTest --scan --stacktrace
+
+      - id: auth
+        name: Authenticate to Google Cloud
+        uses: google-github-actions/auth@v1
+        # NB: actions/checkout must be before google-github-actions/auth
+        with:
+            credentials_json: '${{ secrets.GOOGLE_CREDENTIALS }}'
+
+      - name: Run Device UI Tests on Firebase Test Lab with Flank
+        # TODO(vorburger) Run all modules (not just engine:), like in //kokoro/gcp_ubuntu/kokoro_build.sh
+        # TODO(vorburger) Parallelize and Bash `wait` as in kokoro_build.sh, or just run sequentially?!
+        run: ./gradlew :engine:runFlank --scan --stacktrace
+
       - name: Release artifacts to local repo
         run: ./gradlew publishReleasePublicationToCIRepository --scan
       - name: Upload maven repo