diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f72d76da0..ca61e63a49 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -213,6 +213,41 @@ jobs:
       - name: Run yarn test262
         run: exit 0 # TODO remove test262 from required tests for CI
 
+  test-hermes:
+    name: test-hermes
+
+    # begin macro
+
+    runs-on: ${{ matrix.platform }}
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [ubuntu-latest]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # without this, setup-node errors on mismatched yarn versions
+      - run: corepack enable
+
+      - name: Use Node.js 22.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22.x
+          cache: yarn
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      # end macro
+
+      - name: Run yarn build
+        run: yarn build
+
+      - name: Run SES/Hermes smoke test
+        run: cd packages/ses && yarn test:hermes
+
   viable-release:
     name: viable-release
 
diff --git a/packages/ses/package.json b/packages/ses/package.json
index e3eb14efa8..a7bb6b601b 100644
--- a/packages/ses/package.json
+++ b/packages/ses/package.json
@@ -78,6 +78,7 @@
     "prepare": "npm run clean && npm run build",
     "qt": "ava",
     "test": "tsd && ava",
+    "test:hermes": "./scripts/hermes-test.sh",
     "test:xs": "xst dist/ses.umd.js test/_lockdown-safe.js",
     "postpack": "git clean -f '*.d.ts*' '*.tsbuildinfo'"
   },
@@ -97,6 +98,7 @@
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-eslint-comments": "^3.2.0",
     "eslint-plugin-import": "^2.29.1",
+    "hermes-engine-cli": "^0.12.0",
     "prettier": "^3.3.3",
     "terser": "^5.16.6",
     "tsd": "^0.31.2",
diff --git a/packages/ses/scripts/hermes-test.sh b/packages/ses/scripts/hermes-test.sh
new file mode 100755
index 0000000000..2fdfa1688b
--- /dev/null
+++ b/packages/ses/scripts/hermes-test.sh
@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# Creates a JS smoke test to be compiled into Hermes bytecode (hbc).
+#
+# Usage: scripts/hermes-test.sh
+
+set -ueo pipefail
+
+DIR=$(dirname -- "${BASH_SOURCE[0]}")
+cd "$DIR/.."
+
+OS="$(uname -s)"
+
+case "$OS" in
+    Linux*)
+        OS_DIR="linux64-bin"
+        ;;
+    Darwin*)
+        OS_DIR="osx-bin"
+        ;;
+    CYGWIN*|MINGW*|MSYS*)
+        OS_DIR="win64-bin"
+        ;;
+    *)
+        echo "Unsupported OS: $OS"
+        exit 1
+        ;;
+esac
+
+HERMESC="../../node_modules/hermes-engine-cli/$OS_DIR/hermesc"
+HERMES="../../node_modules/hermes-engine-cli/$OS_DIR/hermes"
+
+echo "Concatenating: dist/ses-hermes.cjs + test/_hermes-smoke.js"
+cat dist/ses-hermes.cjs test/_hermes-smoke.js > test/_hermes-smoke-dist.js
+echo "Generated: test/_hermes-smoke-dist.js"
+
+# Errors on async arrow functions and async generators
+# Both are unsupported on Hermes
+echo "Executing: test/_hermes-smoke-dist.js on Hermes compiler"
+$HERMESC test/_hermes-smoke-dist.js -emit-binary -out test/_hermes-smoke-dist.hbc
+echo "Generated: test/_hermes-smoke-dist.hbc"
+echo "Hermes compiler done"
+
+# TODO: Disabled until https://github.com/endojs/endo/issues/1891 complete
+# echo "Executing generated bytecode file on Hermes VM"
+# $HERMES -b test/_hermes-smoke-dist.hbc
+# echo "Hermes VM done"
+echo "Skipping: Hermes VM"
+
+echo "Hermes tests complete"
+
+echo "Removing: test/_hermes-smoke-dist.js"
+rm test/_hermes-smoke-dist.js
+echo "Removing: test/_hermes-smoke-dist.hbc"
+rm test/_hermes-smoke-dist.hbc
diff --git a/packages/ses/test/_hermes-smoke.js b/packages/ses/test/_hermes-smoke.js
new file mode 100644
index 0000000000..0663956080
--- /dev/null
+++ b/packages/ses/test/_hermes-smoke.js
@@ -0,0 +1,49 @@
+// Hermes doesn't support native I/O,
+// so we concat the SES shim above,
+// when running this test on Hermes.
+
+/**
+ * Test calling SES lockdown.
+ */
+const testLockdown = () => {
+  lockdown();
+};
+
+/**
+ * TODO: Test creating a new Compartment.
+ */
+// eslint-disable-next-line no-unused-vars
+const testCompartment = () => {
+  // eslint-disable-next-line no-unused-vars
+  const c = new Compartment();
+};
+
+/**
+ * TODO: Test Compartment import hook and resolve hook.
+ */
+// eslint-disable-next-line no-unused-vars
+async function testCompartmentHooks() {
+  const resolveHook = a => a;
+
+  async function importHook() {
+    return {
+      imports: [],
+      exports: ['meaning'],
+      execute(exports) {
+        exports.meaning = 42;
+      },
+    };
+  }
+
+  const compartment = new Compartment({}, {}, { resolveHook, importHook });
+
+  const module = compartment.module('.');
+
+  const {
+    namespace: { _meaning },
+  } = await compartment.import('.');
+
+  assert(module);
+}
+
+testLockdown();
diff --git a/yarn.lock b/yarn.lock
index dbf81d4412..68f3ea22af 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1079,6 +1079,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@jest/schemas@npm:^29.4.3":
+  version: 29.4.3
+  resolution: "@jest/schemas@npm:29.4.3"
+  dependencies:
+    "@sinclair/typebox": "npm:^0.25.16"
+  checksum: 10c0/8a35967cec454d1de2d5a58ab99b49a0ff798d1dce2d817bdd9960bb2f070493f767fbbf419e6a263860d3b1ef1e50ab609a76ae21b5f8c09bb0859e8f51a098
+  languageName: node
+  linkType: hard
+
 "@jest/schemas@npm:^29.6.3":
   version: 29.6.3
   resolution: "@jest/schemas@npm:29.6.3"
@@ -2006,6 +2015,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@sinclair/typebox@npm:^0.25.16":
+  version: 0.25.24
+  resolution: "@sinclair/typebox@npm:0.25.24"
+  checksum: 10c0/2faf9878f3a65a1f2855add80b0fe8c6fe83f084ea1ab432fa7506e7c85c55ae121c4af516d089b5737f5fad23b3628fcc83a6a5df29030c3f611185ce0388ac
+  languageName: node
+  linkType: hard
+
 "@sinclair/typebox@npm:^0.27.8":
   version: 0.27.8
   resolution: "@sinclair/typebox@npm:0.27.8"
@@ -2461,7 +2477,16 @@ __metadata:
   languageName: node
   linkType: hard
 
-"acorn@npm:^8.11.3, acorn@npm:^8.12.0, acorn@npm:^8.2.4, acorn@npm:^8.5.0, acorn@npm:^8.6.0, acorn@npm:^8.9.0":
+"acorn@npm:^8.11.3, acorn@npm:^8.2.4, acorn@npm:^8.5.0, acorn@npm:^8.6.0, acorn@npm:^8.9.0":
+  version: 8.11.3
+  resolution: "acorn@npm:8.11.3"
+  bin:
+    acorn: bin/acorn
+  checksum: 10c0/3ff155f8812e4a746fee8ecff1f227d527c4c45655bb1fad6347c3cb58e46190598217551b1500f18542d2bbe5c87120cb6927f5a074a59166fbdd9468f0a299
+  languageName: node
+  linkType: hard
+
+"acorn@npm:^8.12.0":
   version: 8.13.0
   resolution: "acorn@npm:8.13.0"
   bin:
@@ -3800,7 +3825,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"debug@npm:4, debug@npm:^4.3.1, debug@npm:^4.3.2, debug@npm:^4.3.4, debug@npm:^4.3.5, debug@npm:^4.3.6":
+"debug@npm:4, debug@npm:^4.3.1, debug@npm:^4.3.2, debug@npm:^4.3.4, debug@npm:^4.3.6":
   version: 4.3.7
   resolution: "debug@npm:4.3.7"
   dependencies:
@@ -3821,6 +3846,18 @@ __metadata:
   languageName: node
   linkType: hard
 
+"debug@npm:^4.3.5":
+  version: 4.3.5
+  resolution: "debug@npm:4.3.5"
+  dependencies:
+    ms: "npm:2.1.2"
+  peerDependenciesMeta:
+    supports-color:
+      optional: true
+  checksum: 10c0/082c375a2bdc4f4469c99f325ff458adad62a3fc2c482d59923c260cb08152f34e2659f72b3767db8bb2f21ca81a60a42d1019605a412132d7b9f59363a005cc
+  languageName: node
+  linkType: hard
+
 "debug@npm:~3.1.0":
   version: 3.1.0
   resolution: "debug@npm:3.1.0"
@@ -3990,6 +4027,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"diff-sequences@npm:^29.4.3":
+  version: 29.4.3
+  resolution: "diff-sequences@npm:29.4.3"
+  checksum: 10c0/183800b9fd8523a05a3a50ade0fafe81d4b8a8ac113b077d2bc298052ccdc081e3b896f19bf65768b536daebd8169a493c4764cb70a2195e14c442c12538d121
+  languageName: node
+  linkType: hard
+
 "diff-sequences@npm:^29.6.3":
   version: 29.6.3
   resolution: "diff-sequences@npm:29.6.3"
@@ -5532,6 +5576,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"hermes-engine-cli@npm:^0.12.0":
+  version: 0.12.0
+  resolution: "hermes-engine-cli@npm:0.12.0"
+  checksum: 10c0/53a00336632cc7a743e9a88a5199865cf922d118f42f15bed4d2ed2fee635acd0d4d8563803b47e7c1bc2d17650281eb9188be8cfdaa25887243cfee840523be
+  languageName: node
+  linkType: hard
+
 "hosted-git-info@npm:^2.1.4":
   version: 2.8.9
   resolution: "hosted-git-info@npm:2.8.9"
@@ -6320,7 +6371,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"jest-diff@npm:>=29.4.3 < 30, jest-diff@npm:^29.0.3, jest-diff@npm:^29.4.1":
+"jest-diff@npm:>=29.4.3 < 30, jest-diff@npm:^29.4.1":
   version: 29.7.0
   resolution: "jest-diff@npm:29.7.0"
   dependencies:
@@ -6332,6 +6383,25 @@ __metadata:
   languageName: node
   linkType: hard
 
+"jest-diff@npm:^29.0.3":
+  version: 29.5.0
+  resolution: "jest-diff@npm:29.5.0"
+  dependencies:
+    chalk: "npm:^4.0.0"
+    diff-sequences: "npm:^29.4.3"
+    jest-get-type: "npm:^29.4.3"
+    pretty-format: "npm:^29.5.0"
+  checksum: 10c0/00fda597fa6ee22774453c3cd35c2210bd7f749cf48ad7a41c13b898b2943c9c047842720eb928cdb949b9de87204d8d8987bf12aefdb2f0504f5f4112cab5b0
+  languageName: node
+  linkType: hard
+
+"jest-get-type@npm:^29.4.3":
+  version: 29.4.3
+  resolution: "jest-get-type@npm:29.4.3"
+  checksum: 10c0/874b0ced6b1cc677ff7fcf0dc86d02674617a7d0b73d47097604fb3ca460178d16104efdd3837e8b8bf0520ad5d210838c07483b058802b457b8413e60628fd0
+  languageName: node
+  linkType: hard
+
 "jest-get-type@npm:^29.6.3":
   version: 29.6.3
   resolution: "jest-get-type@npm:29.6.3"
@@ -7056,7 +7126,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"minimatch@npm:6 || 7 || 8 || 9, minimatch@npm:^9.0.0, minimatch@npm:^9.0.1, minimatch@npm:^9.0.4, minimatch@npm:^9.0.5":
+"minimatch@npm:6 || 7 || 8 || 9, minimatch@npm:^9.0.0, minimatch@npm:^9.0.4, minimatch@npm:^9.0.5":
   version: 9.0.5
   resolution: "minimatch@npm:9.0.5"
   dependencies:
@@ -7101,6 +7171,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"minimatch@npm:^9.0.1":
+  version: 9.0.4
+  resolution: "minimatch@npm:9.0.4"
+  dependencies:
+    brace-expansion: "npm:^2.0.1"
+  checksum: 10c0/2c16f21f50e64922864e560ff97c587d15fd491f65d92a677a344e970fe62aafdbeafe648965fa96d33c061b4d0eabfe0213466203dd793367e7f28658cf6414
+  languageName: node
+  linkType: hard
+
 "minimist-options@npm:4.1.0":
   version: 4.1.0
   resolution: "minimist-options@npm:4.1.0"
@@ -7179,6 +7258,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"minipass@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "minipass@npm:4.0.0"
+  dependencies:
+    yallist: "npm:^4.0.0"
+  checksum: 10c0/ea9a3eee82a33899693db3c25333ce15d1a900bb7ef47aa97d44db91d293bcbd9a3c5127da617b92844411fcaf6270c37f79755bbcbe11e5d329f60bad6d7229
+  languageName: node
+  linkType: hard
+
 "minipass@npm:^4.2.4":
   version: 4.2.8
   resolution: "minipass@npm:4.2.8"
@@ -7275,6 +7363,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"ms@npm:2.1.2":
+  version: 2.1.2
+  resolution: "ms@npm:2.1.2"
+  checksum: 10c0/a437714e2f90dbf881b5191d35a6db792efbca5badf112f87b9e1c712aace4b4b9b742dd6537f3edf90fd6f684de897cec230abde57e87883766712ddda297cc
+  languageName: node
+  linkType: hard
+
 "ms@npm:^2.1.1, ms@npm:^2.1.3":
   version: 2.1.3
   resolution: "ms@npm:2.1.3"
@@ -8317,6 +8412,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"pretty-format@npm:^29.5.0":
+  version: 29.5.0
+  resolution: "pretty-format@npm:29.5.0"
+  dependencies:
+    "@jest/schemas": "npm:^29.4.3"
+    ansi-styles: "npm:^5.0.0"
+    react-is: "npm:^18.0.0"
+  checksum: 10c0/bcc0190d050196b64e501e5c2b44beb802d79a2b70b6fe6b24ae2d5e0f31237dfcb1f0ab2ada4678829b6ee38507ba292396301aff0a8122e575ffd45d5d037c
+  languageName: node
+  linkType: hard
+
 "pretty-format@npm:^29.7.0":
   version: 29.7.0
   resolution: "pretty-format@npm:29.7.0"
@@ -8894,7 +9000,18 @@ __metadata:
   languageName: node
   linkType: hard
 
-"semver@npm:^7.0.0, semver@npm:^7.1.1, semver@npm:^7.3.2, semver@npm:^7.3.4, semver@npm:^7.3.5, semver@npm:^7.3.7, semver@npm:^7.3.8, semver@npm:^7.5.3, semver@npm:^7.5.4, semver@npm:^7.6.3":
+"semver@npm:^7.0.0, semver@npm:^7.1.1, semver@npm:^7.3.2, semver@npm:^7.3.4, semver@npm:^7.3.5, semver@npm:^7.3.7, semver@npm:^7.5.4":
+  version: 7.5.4
+  resolution: "semver@npm:7.5.4"
+  dependencies:
+    lru-cache: "npm:^6.0.0"
+  bin:
+    semver: bin/semver.js
+  checksum: 10c0/5160b06975a38b11c1ab55950cb5b8a23db78df88275d3d8a42ccf1f29e55112ac995b3a26a522c36e3b5f76b0445f1eef70d696b8c7862a2b4303d7b0e7609e
+  languageName: node
+  linkType: hard
+
+"semver@npm:^7.3.8, semver@npm:^7.5.3, semver@npm:^7.6.3":
   version: 7.6.3
   resolution: "semver@npm:7.6.3"
   bin:
@@ -8952,6 +9069,7 @@ __metadata:
     eslint-config-prettier: "npm:^9.1.0"
     eslint-plugin-eslint-comments: "npm:^3.2.0"
     eslint-plugin-import: "npm:^2.29.1"
+    hermes-engine-cli: "npm:^0.12.0"
     prettier: "npm:^3.3.3"
     terser: "npm:^5.16.6"
     tsd: "npm:^0.31.2"
@@ -9596,7 +9714,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"tar@npm:6.2.1, tar@npm:^6.1.11, tar@npm:^6.1.2, tar@npm:^6.2.1":
+"tar@npm:6.2.1, tar@npm:^6.2.1":
   version: 6.2.1
   resolution: "tar@npm:6.2.1"
   dependencies:
@@ -9610,6 +9728,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"tar@npm:^6.1.11, tar@npm:^6.1.2":
+  version: 6.1.13
+  resolution: "tar@npm:6.1.13"
+  dependencies:
+    chownr: "npm:^2.0.0"
+    fs-minipass: "npm:^2.0.0"
+    minipass: "npm:^4.0.0"
+    minizlib: "npm:^2.1.1"
+    mkdirp: "npm:^1.0.3"
+    yallist: "npm:^4.0.0"
+  checksum: 10c0/eee5f264f3f3c27cd8d4934f80c568470f92811c416144ab671bb36b45a8ed55fbfbbd31f0146f3eddaca91fd564c9a7ec4d2086940968b836f4a2c54146c060
+  languageName: node
+  linkType: hard
+
 "temp-dir@npm:1.0.0":
   version: 1.0.0
   resolution: "temp-dir@npm:1.0.0"