diff --git a/.github/workflows/rust-wasm.yml b/.github/workflows/rust-wasm.yml
new file mode 100644
index 0000000..4a4074a
--- /dev/null
+++ b/.github/workflows/rust-wasm.yml
@@ -0,0 +1,86 @@
+name: Rust + WASM CI
+
+on:
+  pull_request:
+    paths:
+      - "contracts/**"
+      - "backend/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+  push:
+    branches:
+      - main
+    paths:
+      - "contracts/**"
+      - "backend/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+
+jobs:
+  rust-test:
+    name: Rust unit tests
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          components: clippy
+          profile: minimal
+          override: true
+
+      - name: Cache Cargo registry
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+
+      - name: Run cargo fmt check
+        run: cargo fmt --all -- --check
+
+      - name: Run clippy
+        run: cargo clippy --all-targets --all-features -- -D warnings
+
+      - name: Run tests
+        run: cargo test --all-features --workspace --locked --quiet
+        working-directory: ./contracts
+
+  wasm-build:
+    name: Build WASM artifacts
+    runs-on: ubuntu-latest
+    needs: rust-test
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+
+      - name: Add WASM target
+        run: rustup target add wasm32-unknown-unknown
+
+      - name: Build all contract crates to WASM
+        run: |
+          cd contracts
+          cargo build --all --target wasm32-unknown-unknown --release
+
+      - name: Collect built WASM
+        run: |
+          mkdir -p artifacts/wasm
+          find ./target/wasm32-unknown-unknown/release -name '*.wasm' -exec cp {} artifacts/wasm/ \;
+
+      - name: Upload WASM artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: wasm-artifacts
+          path: artifacts/wasm
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