diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c31c3d9b48..95d8396328 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -86,6 +86,12 @@ jobs:
     name: Test (${{ matrix.os }}, ${{ matrix.node }})
     runs-on: ${{ matrix.os }}
 
+    env:
+      # Persisted V8 compile cache (restored/saved by the "Cache Node compile
+      # cache" step). Set at job level so vitest workers and any forked child
+      # processes inherit NODE_COMPILE_CACHE.
+      NODE_COMPILE_CACHE: ${{ runner.temp }}/node-compile-cache
+
     concurrency:
       group: test-${{ github.workflow }}-#${{ github.event.pull_request.number || github.head_ref || github.ref }}-(${{ matrix.os }}, ${{ matrix.node }})
       cancel-in-progress: true
@@ -181,6 +187,15 @@ jobs:
         with:
           node-version: ${{ matrix.node }}
 
+      - name: Cache Node compile cache
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
+        with:
+          path: ${{ runner.temp }}/node-compile-cache
+          key: node-compile-cache-${{ runner.os }}-node${{ matrix.node }}-${{ hashFiles('pnpm-workspace.yaml', '**/package.json') }}
+          restore-keys: |
+            node-compile-cache-${{ runner.os }}-node${{ matrix.node }}-
+            node-compile-cache-${{ runner.os }}-
+
       - name: Cache utoo package store
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with:
@@ -244,6 +259,12 @@ jobs:
     name: Test bin (${{ matrix.os }}, ${{ matrix.node }})
     runs-on: ${{ matrix.os }}
 
+    env:
+      # Persisted V8 compile cache (restored/saved by the "Cache Node compile
+      # cache" step). Set at job level so vitest workers and any forked child
+      # processes inherit NODE_COMPILE_CACHE.
+      NODE_COMPILE_CACHE: ${{ runner.temp }}/node-compile-cache
+
     concurrency:
       group: test-egg-bin-${{ github.workflow }}-#${{ github.event.pull_request.number || github.head_ref || github.ref }}-(${{ matrix.os }}, ${{ matrix.node }})
       cancel-in-progress: true
@@ -260,6 +281,15 @@ jobs:
         with:
           node-version: ${{ matrix.node }}
 
+      - name: Cache Node compile cache
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
+        with:
+          path: ${{ runner.temp }}/node-compile-cache
+          key: node-compile-cache-${{ runner.os }}-node${{ matrix.node }}-${{ hashFiles('pnpm-workspace.yaml', '**/package.json') }}
+          restore-keys: |
+            node-compile-cache-${{ runner.os }}-node${{ matrix.node }}-
+            node-compile-cache-${{ runner.os }}-
+
       - name: Cache utoo package store
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with:
@@ -310,6 +340,12 @@ jobs:
     name: Test scripts (${{ matrix.os }}, ${{ matrix.node }})
     runs-on: ${{ matrix.os }}
 
+    env:
+      # Persisted V8 compile cache (restored/saved by the "Cache Node compile
+      # cache" step). Set at job level so vitest workers and any forked child
+      # processes inherit NODE_COMPILE_CACHE.
+      NODE_COMPILE_CACHE: ${{ runner.temp }}/node-compile-cache
+
     concurrency:
       group: test-egg-scripts-${{ github.workflow }}-#${{ github.event.pull_request.number || github.head_ref || github.ref }}-(${{ matrix.os }}, ${{ matrix.node }})
       cancel-in-progress: true
@@ -326,6 +362,15 @@ jobs:
         with:
           node-version: ${{ matrix.node }}
 
+      - name: Cache Node compile cache
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
+        with:
+          path: ${{ runner.temp }}/node-compile-cache
+          key: node-compile-cache-${{ runner.os }}-node${{ matrix.node }}-${{ hashFiles('pnpm-workspace.yaml', '**/package.json') }}
+          restore-keys: |
+            node-compile-cache-${{ runner.os }}-node${{ matrix.node }}-
+            node-compile-cache-${{ runner.os }}-
+
       - name: Cache utoo package store
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with: