diff --git a/bazel/copts.bzl b/bazel/copts.bzl
index 6149e5cfba5..3044ce85c5f 100644
--- a/bazel/copts.bzl
+++ b/bazel/copts.bzl
@@ -110,6 +110,7 @@ GRPC_LLVM_WINDOWS_WARNING_FLAGS = GRPC_LLVM_WARNING_FLAGS + [
     # TODO(hork): clean up EE offenses
     "-Wno-missing-field-initializers",
     "-Wno-non-virtual-dtor",
+    "-Wno-thread-safety-reference-return",
 
     # TODO(ctiller): offense: dump_args. signed to unsigned
     "-Wno-sign-conversion",
@@ -145,9 +146,11 @@ GRPC_LLVM_WINDOWS_WARNING_FLAGS = GRPC_LLVM_WARNING_FLAGS + [
     "-Wno-suggest-override",
     "-Wno-documentation",
     "-Wno-documentation-unknown-command",
+    "-Wno-unsafe-buffer-usage",
 
     ### possibly bad warnings for this codebase
     "-Wno-covered-switch-default",
+    "-Wno-switch-default",
     "-Wno-switch-enum",
     "-Wno-c99-extensions",
     "-Wno-unused-private-field",  # GRPC_UNUSED does not appear to work for private fields
diff --git a/tools/internal_ci/windows/grpc_build_clang_cl.bat b/tools/internal_ci/windows/grpc_build_clang_cl.bat
new file mode 100644
index 00000000000..a4c94ce8b7c
--- /dev/null
+++ b/tools/internal_ci/windows/grpc_build_clang_cl.bat
@@ -0,0 +1,48 @@
+@rem Copyright 2024 gRPC authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem     http://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+
+@rem Avoid slow finalization after the script has exited.
+@rem See the script's prologue for info on the correct invocation pattern.
+setlocal EnableDelayedExpansion
+IF "%cd%"=="T:\src" (
+  call %~dp0\..\..\..\tools\internal_ci\helper_scripts\move_src_tree_and_respawn_itself.bat %0
+  echo respawn script has finished with exitcode !errorlevel!
+  exit /b !errorlevel!
+)
+endlocal
+
+@rem enter repo root
+cd /d %~dp0\..\..\..
+
+echo "!TIME!: Preparing for the Windows build"
+call tools/internal_ci/helper_scripts/prepare_build_windows.bat || exit /b 1
+
+@rem Install clang-cl
+echo "!TIME!: Installing llvm"
+choco install -y llvm --version=18.1.6
+set BAZEL_LLVM="C:\Program Files\LLVM"
+clang-cl --version
+
+@rem Install bazel
+@rem Side effect of the tools/bazel script is that it downloads the correct version of bazel binary.
+echo "!TIME!: Installing bazel"
+mkdir C:\bazel
+bash -c "tools/bazel --version && cp tools/bazel-*.exe /c/bazel/bazel.exe"
+set PATH=C:\bazel;%PATH%
+bazel --version
+
+echo "!TIME!: Running the bazel build"
+bazel build --config=clang-cl --config=windows_opt --build_tag_filters=-no_windows :all src/core:all
+
+echo "!TIME!: Job Finished"
diff --git a/tools/internal_ci/windows/pull_request/grpc_build_clang_cl.cfg b/tools/internal_ci/windows/pull_request/grpc_build_clang_cl.cfg
new file mode 100644
index 00000000000..b6ec15b9746
--- /dev/null
+++ b/tools/internal_ci/windows/pull_request/grpc_build_clang_cl.cfg
@@ -0,0 +1,25 @@
+# Copyright 2024 The gRPC Authors
+#
+# 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.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/windows/grpc_build_clang_cl.bat"
+timeout_mins: 120
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.*"
+    regex: "github/grpc/reports/**"
+  }
+}