diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 52029992..37107bf0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -114,5 +114,29 @@ jobs:
         working-directory: ./frontend
         run: npm test --if-present
 
-# Workflow run retention settings
-retention-days: 30
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+  backend-tests:
+    name: Backend tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+          cache-dependency-path: backend/package-lock.json
+      - name: Install backend dependencies
+        working-directory: ./backend
+        run: npm ci
+      - name: Run backend tests
+        working-directory: ./backend
+        run: npm test -- --runInBand
+
+  contract-tests:
+    name: Contract tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install pinned Rust toolchain
+        run: rustup toolchain install 1.89.0 --profile minimal
+      - name: Run contract tests
+        run: cargo +1.89.0 test --workspace
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