diff --git a/.github/workflows/mandatory-conformance.yaml b/.github/workflows/mandatory-conformance.yaml
new file mode 100644
index 000000000..781612705
--- /dev/null
+++ b/.github/workflows/mandatory-conformance.yaml
@@ -0,0 +1,44 @@
+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# Github action job to test core java library features on
+# downstream client libraries before they are released.
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+name: mandatory-conformance
+jobs:
+  mandatory-conformance:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: [ 14, 16, 18, 20 ]
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/checkout@v4
+      with:
+        repository: googleapis/cloud-bigtable-clients-test
+        ref: main
+        path: cloud-bigtable-clients-test
+    - uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node }}
+    - uses: actions/setup-go@v5
+      with:
+        go-version: '>=1.20.2'
+    - run: chmod +x .kokoro/mandatory-conformance.sh
+    - run: npm install
+    - run: go version
+    - run: .kokoro/mandatory-conformance.sh
diff --git a/.kokoro/mandatory-conformance.sh b/.kokoro/mandatory-conformance.sh
new file mode 100644
index 000000000..81a8a9d82
--- /dev/null
+++ b/.kokoro/mandatory-conformance.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+
+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -eo pipefail
+
+export NPM_CONFIG_PREFIX=${HOME}/.npm-global
+
+## cd to the parent directory, i.e. the root of the git repo
+cd $(dirname $0)/..
+
+# Stop the testbench & cleanup environment variables
+function cleanup() {
+    echo "Cleanup testbench"
+    # Stop the proxy
+    kill $proxyPID
+}
+trap cleanup EXIT
+
+# Build and start the proxy in a separate process
+pushd .
+npm install
+nohup npm run testproxy &
+proxyPID=$!
+popd
+
+# Run the conformance test skipping known failures
+cd cloud-bigtable-clients-test/tests
+eval "go test -v -proxy_addr=:9999 -skip `tr -d '\n' < ../../testproxy/known_failures.txt`"
+RETURN_CODE=$?
+
+echo "exiting with ${RETURN_CODE}"
+exit ${RETURN_CODE}
diff --git a/testproxy/known_failures.txt b/testproxy/known_failures.txt
index cce1bd7fa..0dfeb8b9e 100644
--- a/testproxy/known_failures.txt
+++ b/testproxy/known_failures.txt
@@ -1 +1,29 @@
-TestMutateRow_Generic_Headers\|TestMutateRow_Generic_DeadlineExceeded|TestMutateRows_Generic_CloseClient\|TestMutateRows_Retry_WithRoutingCookie\|TestReadModifyWriteRow_Generic_Headers\|TestReadModifyWriteRow_NoRetry_TransientError\|TestReadModifyWriteRow_Generic_DeadlineExceeded\|TestReadRow_Generic_DeadlineExceeded\|TestReadRow_Retry_WithRoutingCookie\|TestReadRow_Retry_WithRetryInfo\|TestReadRows_ReverseScans_FeatureFlag_Enabled\|TestReadRows_NoRetry_OutOfOrderError_Reverse\|TestReadRows_Retry_PausedScan\|TestReadRows_Retry_LastScannedRow\|TestReadRows_Retry_LastScannedRow_Reverse\|TestCheckAndMutateRow_NoRetry_TransientError\|TestCheckAndMutateRow_Generic_DeadlineExceeded
\ No newline at end of file
+TestMutateRow_Generic_Headers\|
+TestMutateRow_Generic_DeadlineExceeded\|
+TestMutateRows_Generic_CloseClient\|
+TestMutateRows_Retry_WithRoutingCookie\|
+TestMutateRows_Generic_DeadlineExceeded\|
+TestReadModifyWriteRow_Generic_Headers\|
+TestReadModifyWriteRow_NoRetry_TransientError\|
+TestReadModifyWriteRow_Generic_DeadlineExceeded\|
+TestReadRow_Generic_DeadlineExceeded\|
+TestReadRow_Retry_WithRoutingCookie\|
+TestReadRow_Retry_WithRetryInfo\|
+TestReadRows_ReverseScans_FeatureFlag_Enabled\|
+TestReadRows_NoRetry_OutOfOrderError_Reverse\|
+TestReadRows_Retry_PausedScan\|
+TestReadRows_Retry_LastScannedRow\|
+TestReadRows_Retry_LastScannedRow_Reverse\|
+TestReadRows_Retry_StreamReset\|
+TestReadRows_Generic_CloseClient\|
+TestReadRows_Generic_DeadlineExceeded\|
+TestReadRows_Retry_WithRoutingCookie\|
+TestReadRows_Retry_WithRoutingCookie_MultipleErrorResponses\|
+TestReadRows_Retry_WithRetryInfo\|
+TestReadRows_Retry_WithRetryInfo_MultipleErrorResponse\|
+TestCheckAndMutateRow_NoRetry_TransientError\|
+TestCheckAndMutateRow_Generic_DeadlineExceeded\|
+TestCheckAndMutateRow_Generic_Headers\|
+TestSampleRowKeys_Generic_Headers\|
+TestSampleRowKeys_Generic_DeadlineExceeded\|
+TestSampleRowKeys_Retry_WithRoutingCookie