diff --git a/.circleci/config.yml b/.circleci/config.yml
index 75fc52c6543..6bc7dff061f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -7,6 +7,26 @@ orbs:
   macos: circleci/macos@2.5.1
   android: circleci/android@2.5.0
 
+only-main-or-release-or-build-me: &only-main-or-release-or-build-me
+  filters:
+    branches:
+      only:
+        - main
+        - /.*release$/
+        - /.*build-me$/
+        - /.*hotfix$/
+        - /.*beta-$/
+
+only-prs: &only-prs
+  filters:
+    branches:
+      ignore:
+        - main
+        - /.*release$/
+        - /.*build-me$/
+        - /.*hotfix$/
+        - /.*beta-$/
+
 commands:
   await-previous-builds:
     parameters:
@@ -254,6 +274,28 @@ jobs:
             echo "Triggering CodePush deployment..."
             ./scripts/codepush/deploy-to-codepush.sh Staging
 
+  test-js-pr:
+    parallelism: 8
+    executor:
+      name: node/default
+      tag: "20.9.0"
+    resource_class: large
+    steps:
+      - checkout
+      - install-node-modules
+      - run-relay-compiler
+      - run:
+          name: Run Jest For Updated Files and Scenes Only
+          command: ./scripts/ci/ci-test-js-pr
+          no_output_timeout: 3600s
+          environment:
+            JEST_JUNIT_OUTPUT_DIR: ./reports/junit/
+            JEST_JUNIT_UNIQUE_OUTPUT_NAME: true
+      - store_artifacts:
+          path: ./reports/junit/
+      - store_test_results:
+          path: ./reports/junit/
+
   test-js:
     parallelism: 8
     executor:
@@ -503,7 +545,11 @@ workflows:
               only:
                 - main
 
-      - test-js
+      - test-js:
+          <<: *only-main-or-release-or-build-me
+
+      - test-js-pr:
+          <<: *only-prs
 
       - build-test-js
 
diff --git a/scripts/ci/ci-test-js-pr b/scripts/ci/ci-test-js-pr
new file mode 100755
index 00000000000..bc2b27b702f
--- /dev/null
+++ b/scripts/ci/ci-test-js-pr
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+UPDATED_GLOBAL_FILES=$(git diff --name-only origin/main...$CIRCLE_SHA1 | grep -E '^.+\.(ts|tsx)$' | grep -v '^src/app/Scenes/' | grep -v '^src/__generated__/')
+UPDATED_PACKAGES=$(git diff --name-only origin/main...$CIRCLE_SHA1 | grep -E "package.json|yarn.lock")
+UPDATED_SCENES=$(git diff --name-only origin/main...$CIRCLE_SHA1 | grep -E '^.+\.(ts|tsx)$' | sed -n 's#^src/app/Scenes/\([^/]*\)/.*#src/app/Scenes/\1#p' | uniq)
+
+ALL_UPDATED_FILES=$(git diff --name-only origin/main...$CIRCLE_SHA1 | grep -E '^.+\.(ts|tsx)$' | xargs -n 1 basename)
+JEST_OPTIONS="--ci --forceExit --logHeapUsage --runInBand --reporters=default --reporters=jest-junit --shard=$(expr $CIRCLE_NODE_INDEX + 1)/$CIRCLE_NODE_TOTAL"
+
+
+# If only scene files in `src/app/Scenes` have been updated, run only tests for those scenes.
+# If global TypeScript files or `package.json` have been updated, run all tests.
+# If no `.ts` or `.tsx` files or packages have been updated, don't run any tests.
+if [ -n "$UPDATED_GLOBAL_FILES" ] || [ -n "$UPDATED_PACKAGES" ]
+then
+  yarn jest $JEST_OPTIONS
+elif [ -n "$UPDATED_SCENES" ] || [ -n "$ALL_UPDATED_FILES" ]
+  yarn jest $UPDATED_SCENES $ALL_UPDATED_FILES $JEST_OPTIONS
+then
+  echo "No ts|tsx files are updated. Skipping tests."
+fi
\ No newline at end of file