diff --git a/.github/workflows/build_matrix.yml b/.github/workflows/build_matrix.yml
new file mode 100644
index 0000000..ef52356
--- /dev/null
+++ b/.github/workflows/build_matrix.yml
@@ -0,0 +1,99 @@
+name: Build matrix
+
+on:
+  workflow_call:
+    outputs:
+      matrix:
+        value: ${{ jobs.setup-matrix.outputs.matrix }}
+
+jobs:
+  # IMPORTANT: in case of changing the structure of this file make sure to test
+  # the changes against `npm/gen-root.ts` file
+  setup-matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.setup-matrix.outputs.matrix }}
+    steps:
+      - id: setup-matrix
+        uses: druzsan/setup-matrix@v2
+        with:
+          matrix: |
+            build:
+              [
+                linux-x64-gnu,
+                linux-x64-musl,
+                linux-arm64-gnu,
+                linux-arm64-musl,
+                linux-ia32-gnu,
+                darwin-arm64,
+                darwin-x64,
+                win32-x64-msvc,
+                win32-arm64-msvc,
+                win32-ia32-msvc,
+              ]
+            include:
+              - build: linux-x64-gnu
+                os: ubuntu-latest
+                rust: stable
+                target: x86_64-unknown-linux-gnu
+                libc: glibc
+
+              - build: linux-x64-musl
+                os: ubuntu-latest
+                rust: stable
+                target: x86_64-unknown-linux-musl
+                libc: musl
+                cross: true
+
+              - build: linux-arm64-gnu
+                os: ubuntu-latest
+                rust: stable
+                target: aarch64-unknown-linux-gnu
+                libc: glibc
+                cross: true
+
+              - build: linux-arm64-musl
+                os: ubuntu-latest
+                rust: stable
+                target: aarch64-unknown-linux-musl
+                libc: musl
+                cross: true
+
+              - build: linux-ia32-gnu
+                os: ubuntu-latest
+                rust: stable
+                target: i686-unknown-linux-gnu
+                libc: glibc
+                cross: true
+
+              - build: darwin-arm64
+                os: macos-latest
+                rust: stable
+                target: aarch64-apple-darwin
+
+              - build: darwin-x64
+                os: macos-latest
+                rust: stable
+                target: x86_64-apple-darwin
+
+              - build: win32-x64-msvc
+                os: windows-latest
+                rust: stable
+                target: x86_64-pc-windows-msvc
+                libc: msvc
+                ext: ".exe"
+
+              - build: win32-arm64-msvc
+                os: windows-latest
+                rust: stable
+                target: aarch64-pc-windows-msvc
+                libc: msvc
+                ext: ".exe"
+                test: false 
+
+              - build: win32-ia32-msvc
+                os: windows-latest
+                rust: stable
+                target: i686-pc-windows-msvc
+                libc: msvc
+                ext: ".exe"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..51a59ff
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,74 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches: [main]
+    types: [opened, reopened, synchronize]
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  # TODO: cancel in progress is not ok for a release since it can be cancelled in a middle of updates
+  # and we can end up with partial release.
+  # but for pull-requests cancelling previously running jobs could be beneficial
+  # cancel-in-progress: true
+
+jobs:
+  setup_build_matrix:
+    name: Outputs matrix used for cross compilation
+    uses: ./.github/workflows/build_matrix.yml
+
+  test_wasm:
+    name: Run Tests (WASM)
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./tailcall-wasm
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Rust
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          target: wasm32-unknown-unknown
+
+      - name: Install Wasm Pack
+        run: cargo install wasm-bindgen-cli --vers "0.2.92"
+
+      - name: Test WASM
+        run: |
+          # TODO: add test for wasm, so we could actually test that.
+          cargo install -q worker-build && worker-build
+
+  test:
+    name: Run Tests on ${{ matrix.build }}
+    runs-on: ${{ matrix.os || 'ubuntu-latest' }}
+    needs: setup_build_matrix
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJson(needs.setup_build_matrix.outputs.matrix) }}
+
+      steps:
+        - uses: actions/checkout@v4
+
+        - name: Install Node.js
+          uses: actions/setup-node@v4
+          with:
+            node-version: "20.11.0"
+
+        - name: Install Rust Toolchain
+          uses: actions-rust-lang/setup-rust-toolchain@v1
+
+        - name: Install Cross compilation toolchain
+          uses: taiki-e/setup-cross-toolchain-action@v1
+          with:
+            target: ${{ matrix.target }}
+        - uses: taiki-e/install-action@cargo-llvm-cov
+
+        - name: Run Cargo Test
+          if: matrix.test != 'false'
+          # TODO: run llvm-cov only for single build since other builds are not sent to codecov anyway
+          run: cargo llvm-cov --workspace ${{ matrix.features }} --lcov --target ${{ matrix.target }} --output-path lcov.info