diff --git a/.github/workflows/rnx-build.yml b/.github/workflows/rnx-build.yml
new file mode 100644
index 000000000..5a8259624
--- /dev/null
+++ b/.github/workflows/rnx-build.yml
@@ -0,0 +1,237 @@
+name: rnx-build
+on:
+  workflow_dispatch:
+    inputs:
+      architecture:
+        description: "Supported architectures are `arm64`, `x64`"
+        required: true
+        default: "x64"
+      deviceType:
+        description: "Supported device types are `device`, `emulator`, `simulator`"
+        required: true
+        default: "simulator"
+      packageManager:
+        description: "Binary name of the package manager used in the current repo"
+        required: true
+        default: "yarn"
+      platform:
+        description: "Supported platforms are `android`, `ios`, `macos`, `windows`"
+        required: true
+      projectRoot:
+        description: "Root of the project"
+        required: true
+      scheme:
+        description: "The workspace scheme to build (iOS and macOS only)"
+        default: "ReactTestApp"
+jobs:
+  build-android:
+    name: "Build Android"
+    if: ${{ github.event.inputs.platform == 'android' }}
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up JDK
+        uses: actions/setup-java@v3.4.0
+        with:
+          distribution: temurin
+          java-version: 11
+      - name: Set up Node 16
+        uses: actions/setup-node@v3.3.0
+        with:
+          node-version: 16
+      - name: Install npm dependencies
+        run: ${{ github.event.inputs.packageManager }} install
+      - name: Build Android app
+        uses: gradle/gradle-build-action@v2.2.1
+        with:
+          gradle-version: wrapper
+          arguments: --no-daemon clean assembleDebug
+          build-root-directory: ${{ github.event.inputs.projectRoot }}/android
+      - name: Upload build artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: android-artifact
+          path: ${{ github.event.inputs.projectRoot }}/android/app/build/outputs/apk/debug/app-debug.apk
+          if-no-files-found: error
+  build-ios:
+    name: "Build iOS"
+    if: ${{ github.event.inputs.platform == 'ios' }}
+    runs-on: macos-12
+    env:
+      CERTIFICATE_FILE: build-certificate.p12
+      KEYCHAIN_FILE: app-signing.keychain-db
+      PROVISION_PATH: "Library/MobileDevice/Provisioning Profiles/Provisioning_Profile.mobileprovision"
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Node 16
+        uses: actions/setup-node@v3.3.0
+        with:
+          node-version: 16
+      - name: Install npm dependencies
+        run: ${{ github.event.inputs.packageManager }} install
+      - name: Install Pods
+        run: pod install --project-directory=ios
+        working-directory: ${{ github.event.inputs.projectRoot }}
+      - name: Disable Clang sanitizers
+        run: |
+          # We need to disable Clang sanitizers otherwise the app will crash on
+          # startup trying to load Clang sanitizer libraries that would only
+          # exist if Xcode was attached.
+          xcconfig=node_modules/.generated/ios/ReactTestApp/ReactTestApp.debug.xcconfig
+          if [[ -f "${xcconfig}" ]]; then
+            sed -i '' 's/CLANG_ADDRESS_SANITIZER = YES/CLANG_ADDRESS_SANITIZER = NO/g' "${xcconfig}"
+            sed -i '' 's/CLANG_UNDEFINED_BEHAVIOR_SANITIZER = YES/CLANG_UNDEFINED_BEHAVIOR_SANITIZER = NO/g' "${xcconfig}"
+            sed -i '' 's/-fsanitize=bounds//g' "${xcconfig}"
+          fi
+        working-directory: ${{ github.event.inputs.projectRoot }}
+      - name: Install Apple signing certificate and provisioning profile
+        if: ${{ github.event.inputs.deviceType == 'device' }}
+        env:
+          BUILD_CERTIFICATE_BASE64: ${{ secrets.BUILD_CERTIFICATE_BASE64 }}
+          BUILD_PROVISION_PROFILE_BASE64: ${{ secrets.BUILD_PROVISION_PROFILE_BASE64 }}
+          KEYCHAIN_PASSWORD: ${{ secrets.KEYCHAIN_PASSWORD }}
+          P12_PASSWORD: ${{ secrets.P12_PASSWORD }}
+        run: |
+          # https://docs.github.com/en/actions/deployment/deploying-xcode-applications/installing-an-apple-certificate-on-macos-runners-for-xcode-development
+          mkdir -p "$(dirname "${HOME}/${PROVISION_PATH}")"
+
+          echo -n "${BUILD_CERTIFICATE_BASE64}" | base64 --decode --output "${RUNNER_TEMP}/${CERTIFICATE_FILE}"
+          echo -n "${BUILD_PROVISION_PROFILE_BASE64}" | base64 --decode --output "${HOME}/${PROVISION_PATH}"
+
+          security create-keychain -p "${KEYCHAIN_PASSWORD}" "${RUNNER_TEMP}/${KEYCHAIN_FILE}"
+          security set-keychain-settings -lut 21600 "${RUNNER_TEMP}/${KEYCHAIN_FILE}"
+          security unlock-keychain -p "${KEYCHAIN_PASSWORD}" "${RUNNER_TEMP}/${KEYCHAIN_FILE}"
+
+          security import "${RUNNER_TEMP}/${CERTIFICATE_FILE}" -k "${RUNNER_TEMP}/${KEYCHAIN_FILE}" -t cert -f pkcs12 -P "${P12_PASSWORD}" -A -T '/usr/bin/codesign' -T '/usr/bin/security'
+          security set-key-partition-list -S apple-tool:,apple: -k ${KEYCHAIN_PASSWORD} "${RUNNER_TEMP}/${KEYCHAIN_FILE}" 1> /dev/null
+          security list-keychain -d user -s "${RUNNER_TEMP}/${KEYCHAIN_FILE}" login.keychain
+      - name: Build iOS app
+        run: |
+          if [[ ${{ github.event.inputs.deviceType }} == 'device' ]]; then
+            destination='generic/platform=iOS'
+            code_signing=''
+          else
+            destination='generic/platform=iOS Simulator'
+            code_signing='CODE_SIGNING_ALLOWED=NO'
+          fi
+          xcworkspace=$(find . -maxdepth 1 -name '*.xcworkspace' -type d | head -1)
+          xcodebuild -workspace ${xcworkspace} -scheme ${{ github.event.inputs.scheme }} -destination "${destination}" -configuration Debug -derivedDataPath DerivedData ${code_signing} COMPILER_INDEX_STORE_ENABLE=NO build
+        working-directory: ${{ github.event.inputs.projectRoot }}/ios
+      - name: Remove Apple signing certificate and provisioning profile
+        if: ${{ always() && github.event.inputs.deviceType == 'device' }}
+        run: |
+          # Always run this job step, even if previous ones fail. See also
+          # https://docs.github.com/en/actions/deployment/deploying-xcode-applications/installing-an-apple-certificate-on-macos-runners-for-xcode-development#required-clean-up-on-self-hosted-runners
+          security delete-keychain "${RUNNER_TEMP}/${KEYCHAIN_FILE}"
+          rm -f "${RUNNER_TEMP}/${CERTIFICATE_FILE}" "${HOME}/${PROVISION_PATH}"
+      - name: Prepare build artifact
+        run: |
+          output_path=DerivedData/Build/Products
+          app=$(find ${output_path} -maxdepth 2 -name '*.app' -type d | head -1)
+          # bsdtar corrupts files when archiving due to APFS sparse files. A
+          # workaround is to use GNU Tar instead. See also:
+          #   - https://github.com/actions/cache/issues/403
+          #   - https://github.com/actions/virtual-environments/issues/2619
+          gtar -cvf ios-artifact.tar -C "$(dirname ${app})" "$(basename ${app})"
+          shasum --algorithm 256 ios-artifact.tar
+        working-directory: ${{ github.event.inputs.projectRoot }}/ios
+      - name: Upload build artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: ios-artifact
+          path: ${{ github.event.inputs.projectRoot }}/ios/ios-artifact.tar
+          if-no-files-found: error
+  build-macos:
+    name: "Build macOS"
+    if: ${{ github.event.inputs.platform == 'macos' }}
+    runs-on: macos-12
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Node 16
+        uses: actions/setup-node@v3.3.0
+        with:
+          node-version: 16
+      - name: Install npm dependencies
+        run: ${{ github.event.inputs.packageManager }} install
+      - name: Install Pods
+        run: pod install --project-directory=macos
+        working-directory: ${{ github.event.inputs.projectRoot }}
+      - name: Disable Clang sanitizers
+        run: |
+          # We need to disable Clang sanitizers otherwise the app will crash on
+          # startup trying to load Clang sanitizer libraries that would only
+          # exist if Xcode was attached.
+          xcconfig=node_modules/.generated/macos/ReactTestApp/ReactTestApp.debug.xcconfig
+          if [[ -f "${xcconfig}" ]]; then
+            sed -i '' 's/CLANG_ADDRESS_SANITIZER = YES/CLANG_ADDRESS_SANITIZER = NO/g' "${xcconfig}"
+            sed -i '' 's/CLANG_UNDEFINED_BEHAVIOR_SANITIZER = YES/CLANG_UNDEFINED_BEHAVIOR_SANITIZER = NO/g' "${xcconfig}"
+            sed -i '' 's/-fsanitize=bounds//g' "${xcconfig}"
+          fi
+        working-directory: ${{ github.event.inputs.projectRoot }}
+      - name: Build macOS app
+        run: |
+          xcworkspace=$(find . -maxdepth 1 -name '*.xcworkspace' -type d | head -1)
+          xcodebuild -workspace ${xcworkspace} -scheme ${{ github.event.inputs.scheme }} -configuration Debug -derivedDataPath DerivedData CODE_SIGNING_ALLOWED=NO COMPILER_INDEX_STORE_ENABLE=NO build
+        working-directory: ${{ github.event.inputs.projectRoot }}/macos
+      - name: Prepare build artifact
+        run: |
+          output_path=DerivedData/Build/Products
+          app=$(find ${output_path} -maxdepth 2 -name '*.app' -type d | head -1)
+          # bsdtar corrupts files when archiving due to APFS sparse files. A
+          # workaround is to use GNU Tar instead. See also:
+          #   - https://github.com/actions/cache/issues/403
+          #   - https://github.com/actions/virtual-environments/issues/2619
+          gtar -cvf macos-artifact.tar -C "$(dirname ${app})" "$(basename ${app})"
+          shasum --algorithm 256 macos-artifact.tar
+        working-directory: ${{ github.event.inputs.projectRoot }}/macos
+      - name: Upload build artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: macos-artifact
+          path: ${{ github.event.inputs.projectRoot }}/macos/macos-artifact.tar
+          if-no-files-found: error
+  build-windows:
+    name: "Build Windows"
+    if: ${{ github.event.inputs.platform == 'windows' }}
+    runs-on: windows-2022
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up MSBuild
+        uses: microsoft/setup-msbuild@v1.1
+      - name: Set up Node 16
+        uses: actions/setup-node@v3.3.0
+        with:
+          node-version: 16
+      - name: Install npm dependencies
+        run: ${{ github.event.inputs.packageManager }} install
+      - name: Install Windows test app
+        run: |
+          npx --package react-native-test-app -- install-windows-test-app --use-nuget
+        working-directory: ${{ github.event.inputs.projectRoot }}
+      - name: Install NuGet packages
+        run: |
+          nuget restore
+        working-directory: ${{ github.event.inputs.projectRoot }}/windows
+      - name: Build Windows app
+        run: |
+          MSBuild -maxCpuCount -property:Configuration=Debug -property:Platform=${{ github.event.inputs.architecture }} -property:AppxBundlePlatforms=${{ github.event.inputs.architecture }} -property:AppxBundle=Always -property:UapAppxPackageBuildMode=SideloadOnly -property:UseBundle=false -target:Build
+        working-directory: ${{ github.event.inputs.projectRoot }}/windows
+      - name: Prepare build artifact
+        id: prepare-build-artifact
+        run: |
+          appx_manifest=$(find ${{ github.event.inputs.architecture }}/Debug -name AppxManifest.xml -type f | head -1)
+          app_name=$(basename $(dirname ${appx_manifest}))
+          cp ${appx_manifest} AppPackages/${app_name}/*
+          echo "::set-output name=app-name::${app_name}"
+        shell: bash
+        working-directory: ${{ github.event.inputs.projectRoot }}/windows
+      - name: Upload build artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: windows-artifact
+          path: ${{ github.event.inputs.projectRoot }}/windows/AppPackages/${{ steps.prepare-build-artifact.outputs.app-name }}
+          if-no-files-found: error