diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ff8f6ef2..60ab7c91 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,15 +20,25 @@ on:
         type: string
         required: true
         description: The version to use for the C# package
+      ref:
+        type: string
+        default: "main"
+        description: The branch, tag, or sha to checkout - default to "main".
   push:
+    # TODO: Remove!
     # Temporary due to workflow dispatch restrictions
 env:
   CARGO_TERM_COLOR: always
+  # TODO: Remove!
+  # Temporary due to workflow dispatch restrictions
+  INPUT_REF: chore/restructure
 jobs:
   build-schemas-and-test-kit:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
+      with:
+        ref: ${{ env.INPUT_REF }}
     - name: Install Rust Toolchain
       uses: actions-rs/toolchain@v1
       with:
@@ -37,6 +47,8 @@ jobs:
         profile: minimal
     - name: Run sccache-cache
       uses: mozilla-actions/sccache-action@v0.0.3
+    - name: Whats here
+      run: ls -lah
     - name: Generate Test Kit
       run: cargo run
       env:
@@ -48,4 +60,128 @@ jobs:
       uses: actions/upload-artifact@v3
       with:
         name: "schemas-and-test-kit"
-        path: "crates/generator/output"
\ No newline at end of file
+        path: "crates/generator/output"
+  build:
+    runs-on: ${{ matrix.build-target.runner }}
+    continue-on-error: false
+    strategy:
+      matrix:
+        build-target:
+          # =============
+          # JSON Toolkit
+          # =============
+
+          # WASM Targets
+          - crate: radix-engine-toolkit
+            target-triple: wasm32-unknown-unknown
+            runner: ubuntu-latest
+          
+          # ===============
+          # UniFFI Toolkit
+          # ===============
+
+          # Linux Targets
+          - crate: radix-engine-toolkit-uniffi
+            target-triple: x86_64-unknown-linux-gnu
+            runner: ubuntu-20.04
+          - crate: radix-engine-toolkit-uniffi
+            target-triple: aarch64-unknown-linux-gnu
+            runner: ubuntu-latest
+          
+          # PC Targets
+          - crate: radix-engine-toolkit-uniffi
+            target-triple: x86_64-pc-windows-gnu
+            runner: ubuntu-latest
+          
+          # Android Targets
+          - crate: radix-engine-toolkit-uniffi
+            target-triple: aarch64-linux-android
+            runner: ubuntu-latest
+          - crate: radix-engine-toolkit-uniffi
+            target-triple: armv7-linux-androideabi
+            runner: ubuntu-latest
+          
+          # MacOS Targets
+          - crate: radix-engine-toolkit-uniffi
+            target-triple: aarch64-apple-darwin
+            runner: macos-latest
+          - crate: radix-engine-toolkit-uniffi
+            target-triple: x86_64-apple-darwin
+            runner: macos-latest
+          
+          # iOS Targets
+          - crate: radix-engine-toolkit-uniffi
+            target-triple: x86_64-apple-ios
+            runner: macos-latest
+          - crate: radix-engine-toolkit-uniffi
+            target-triple: aarch64-apple-ios
+            runner: macos-latest
+          - crate: radix-engine-toolkit-uniffi
+            target-triple: aarch64-apple-ios-sim
+            runner: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ env.INPUT_REF }}
+      - name: Install Rust Toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly-2023-11-24
+          override: true
+          profile: minimal
+      - name: Run sccache-cache
+        uses: mozilla-actions/sccache-action@v0.0.3
+
+      # Installing Build Dependencies
+      - name: Build Dependencies (aarch64 linux)
+        if: ${{ matrix.build-target.target-triple == 'aarch64-unknown-linux-gnu' }}
+        run: | 
+          sudo apt-get update
+          sudo apt-get install -y gcc-aarch64-linux-gnu
+          echo "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc" >> $GITHUB_ENV
+          echo "CC=aarch64-linux-gnu-gcc" >> $GITHUB_ENV
+          echo "AR=aarch64-linux-gnu-gcc-ar" >> $GITHUB_ENV
+      - name: Build Dependencies (android)
+        uses: nttld/setup-ndk@v1
+        id: setup-ndk
+        if: ${{ matrix.build-target.target-triple == 'aarch64-linux-android' || matrix.build-target.target-triple == 'armv7-linux-androideabi' }}
+        with:
+          ndk-version: r25b
+      - name: Build Dependencies (aarch64 android)
+        if: ${{ matrix.build-target.target-triple == 'aarch64-linux-android' }}
+        env:
+          ANDROID_NDK_HOME: ${{ steps.setup-ndk.outputs.ndk-path }}
+        run: | 
+          echo "CARGO_TARGET_AARCH64_LINUX_ANDROID_LINKER=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android21-clang" >> $GITHUB_ENV
+          echo "CC=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android21-clang" >> $GITHUB_ENV
+          echo "AR=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-ar" >> $GITHUB_ENV
+      - name: Build Dependencies (armv7 android)
+        if: ${{ matrix.build-target.target-triple == 'armv7-linux-androideabi' }}
+        env:
+          ANDROID_NDK_HOME: ${{ steps.setup-ndk.outputs.ndk-path }}
+        run: | 
+          echo "CARGO_TARGET_ARMV7_LINUX_ANDROIDEABI_LINKER=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi19-clang" >> $GITHUB_ENV
+          echo "CC=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi19-clang" >> $GITHUB_ENV
+          echo "AR=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-ar" >> $GITHUB_ENV
+      - name: Build Dependencies (aarch64/x86_64 windows)
+        if: ${{ matrix.build-target.target-triple == 'x86_64-pc-windows-gnu' }}
+        run: | 
+          sudo apt-get install -y mingw-w64
+          echo "CARGO_TARGET_X86_64_PC_WINDOWS_GNU_LINKER=x86_64-w64-mingw32-gcc" >> $GITHUB_ENV
+          echo "CC=x86_64-w64-mingw32-gcc" >> $GITHUB_ENV
+          echo "AR=x86_64-w64-mingw32-gcc-ar" >> $GITHUB_ENV
+
+      - name: Build
+        working-directory: crate/${{ matrix.build-target.crate }}
+        env: 
+          # The minumum iOS version of the iOS builds - has no effect outside
+          # iOS builds.
+          IPHONEOS_DEPLOYMENT_TARGET: "11.0"
+          # Enable sccache
+          SCCACHE_GHA_ENABLED: "true"
+          RUSTC_WRAPPER: "sccache"
+        run: | 
+          echo $IPHONEOS_DEPLOYMENT_TARGET
+          cargo build \
+            --target ${{ matrix.build-target.target-triple }} \
+            --release
\ No newline at end of file