diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index a67112aac..000000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,122 +0,0 @@
-version: 2.1
-
-orbs:
-  newspack: newspack/newspack@1.5.8
-
-commands:
-  checkout_code:
-    steps:
-      - checkout
-      - attach_workspace:
-          at: ~/
-
-jobs:
-  build:
-    docker:
-      - image: cimg/node:lts
-    steps:
-      - checkout_code
-      - run:
-          name: Install dependencies
-          command: npm ci
-      - persist_to_workspace:
-          root: ~/
-          paths:
-            - project
-
-  # Build distributable ZIP files.
-  build_distributables:
-    docker:
-      - image: cimg/node:lts
-    steps:
-      - checkout_code
-      - run:
-          name: Build theme ZIPs
-          command: npm run build && npm run release:archive
-      - store_artifacts:
-          path: release/newspack-joseph.zip
-      - store_artifacts:
-          path: release/newspack-katharine.zip
-      - store_artifacts:
-          path: release/newspack-nelson.zip
-      - store_artifacts:
-          path: release/newspack-sacha.zip
-      - store_artifacts:
-          path: release/newspack-scott.zip
-      - store_artifacts:
-          path: release/newspack-theme.zip
-
-  # Linting
-  lint:
-    docker:
-      - image: cimg/node:lts
-    steps:
-      - checkout_code
-      - run:
-          name: Run Linter
-          command: npm run lint
-
-  # Release job
-  release:
-    docker:
-      - image: cimg/node:lts
-    steps:
-      - checkout_code
-      - run:
-          name: Release new version
-          command: npm run release
-      - persist_to_workspace:
-          root: ~/
-          paths:
-            - project
-
-  # Reset alpha branch after a release and publish child themes' releases
-  post_release:
-    docker:
-      - image: cimg/node:lts
-    steps:
-      - checkout_code
-      - run:
-          name: Publish child themes' releases
-          command: node scripts/create-child-releases.js --run
-      - run:
-          name: Perform post-release chores
-          command: ./node_modules/newspack-scripts/post-release.sh
-
-workflows:
-  version: 2
-  all:
-    jobs:
-      - build
-      - newspack/i18n:
-          requires:
-            - build
-          filters:
-            branches:
-              only:
-                - trunk
-      - lint:
-          requires:
-            - build
-      - release:
-          requires:
-            - build
-          filters:
-            branches:
-              only:
-                - release
-                - alpha
-                - /^hotfix\/.*/
-                - /^epic\/.*/
-      - build_distributables:
-          requires:
-            - build
-            # Running this after release ensure the version number in files will be correct.
-            - release
-      - post_release:
-          requires:
-            - release
-          filters:
-            branches:
-              only:
-                - release
diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
new file mode 100644
index 000000000..10c7a3f6d
--- /dev/null
+++ b/.github/workflows/build-and-test.yml
@@ -0,0 +1,23 @@
+name: Build and Test
+
+on:
+  pull_request:
+  push:
+    branches:
+      - trunk
+      - release
+      - alpha
+      - 'hotfix/**'
+      - 'epic/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    uses: Automattic/newspack-scripts/.github/workflows/reusable-build.yml
+
+  lint-js-scss:
+    needs: build
+    uses: Automattic/newspack-scripts/.github/workflows/reusable-lint-js-scss.yml
diff --git a/.github/workflows/build-distributable.yml b/.github/workflows/build-distributable.yml
new file mode 100644
index 000000000..fc2bcd2d8
--- /dev/null
+++ b/.github/workflows/build-distributable.yml
@@ -0,0 +1,64 @@
+name: Build distributable
+
+on:
+  pull_request:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build-distributable:
+    name: Build theme ZIPs
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: '.nvmrc'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci --legacy-peer-deps
+
+      - name: Build and create archives
+        run: npm run build && npm run release:archive
+
+      - name: Upload newspack-theme
+        uses: actions/upload-artifact@v4
+        with:
+          name: newspack-theme
+          path: release/newspack-theme.zip
+
+      - name: Upload newspack-joseph
+        uses: actions/upload-artifact@v4
+        with:
+          name: newspack-joseph
+          path: release/newspack-joseph.zip
+
+      - name: Upload newspack-katharine
+        uses: actions/upload-artifact@v4
+        with:
+          name: newspack-katharine
+          path: release/newspack-katharine.zip
+
+      - name: Upload newspack-nelson
+        uses: actions/upload-artifact@v4
+        with:
+          name: newspack-nelson
+          path: release/newspack-nelson.zip
+
+      - name: Upload newspack-sacha
+        uses: actions/upload-artifact@v4
+        with:
+          name: newspack-sacha
+          path: release/newspack-sacha.zip
+
+      - name: Upload newspack-scott
+        uses: actions/upload-artifact@v4
+        with:
+          name: newspack-scott
+          path: release/newspack-scott.zip
diff --git a/.github/workflows/i18n.yml b/.github/workflows/i18n.yml
new file mode 100644
index 000000000..b1c45ab60
--- /dev/null
+++ b/.github/workflows/i18n.yml
@@ -0,0 +1,14 @@
+name: Internationalization
+
+on:
+  push:
+    branches:
+      - trunk
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  i18n:
+    uses: Automattic/newspack-scripts/.github/workflows/reusable-i18n.yml@trunk
diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
new file mode 100644
index 000000000..151129ad4
--- /dev/null
+++ b/.github/workflows/php.yml
@@ -0,0 +1,19 @@
+name: PHP
+
+on:
+  pull_request:
+  push:
+    branches:
+      - trunk
+      - release
+      - alpha
+      - 'hotfix/**'
+      - 'epic/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  lint-php:
+    uses: Automattic/newspack-scripts/.github/workflows/reusable-lint-php.yml@trunk
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 000000000..c3e7f0c39
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,28 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - release
+      - alpha
+      - 'hotfix/**'
+      - 'epic/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    uses: Automattic/newspack-scripts/.github/workflows/reusable-build.yml@trunk
+
+  release:
+    needs: build
+    uses: Automattic/newspack-scripts/.github/workflows/reusable-release.yml@trunk
+    secrets:
+      NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+
+  post-release:
+    if: github.ref == 'refs/heads/release'
+    needs: release
+    uses: Automattic/newspack-scripts/.github/workflows/reusable-post-release.yml@trunk
diff --git a/.github/workflows/reusable-sync-release.yml b/.github/workflows/reusable-sync-release.yml
new file mode 100644
index 000000000..6eee1c886
--- /dev/null
+++ b/.github/workflows/reusable-sync-release.yml
@@ -0,0 +1,64 @@
+name: Sync Release
+
+on:
+  workflow_call:
+    inputs:
+      theme:
+        description: 'Theme name (e.g., newspack-joseph)'
+        required: true
+        type: string
+
+jobs:
+  sync-release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Sync releases from newspack-theme
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          # Get last 5 releases (including pre-releases)
+          RELEASES=$(gh release list --repo Automattic/newspack-theme --limit 5 --json tagName,name,isPrerelease)
+
+          # Process each release (oldest first to maintain chronological order)
+          echo "$RELEASES" | jq -c 'reverse | .[]' | while read -r RELEASE; do
+            TAG=$(echo "$RELEASE" | jq -r '.tagName')
+            NAME=$(echo "$RELEASE" | jq -r '.name')
+            IS_PRERELEASE=$(echo "$RELEASE" | jq -r '.isPrerelease')
+
+            echo "Checking release: $TAG"
+
+            # Check if release already exists
+            if gh release view "$TAG" --repo ${{ github.repository }} > /dev/null 2>&1; then
+              echo "Release $TAG already exists, skipping..."
+              continue
+            fi
+
+            echo "Creating release: $TAG"
+
+            # Fetch release body
+            BODY=$(gh release view "$TAG" --repo Automattic/newspack-theme --json body -q '.body')
+
+            # Download theme ZIP
+            gh release download "$TAG" \
+              --repo Automattic/newspack-theme \
+              --pattern "${{ inputs.theme }}.zip" \
+              --dir .
+
+            # Create release
+            PRERELEASE_FLAG=""
+            if [ "$IS_PRERELEASE" = "true" ]; then
+              PRERELEASE_FLAG="--prerelease"
+            fi
+
+            gh release create "$TAG" \
+              --repo ${{ github.repository }} \
+              --title "$NAME" \
+              --notes "$BODY" \
+              $PRERELEASE_FLAG \
+              "${{ inputs.theme }}.zip"
+
+            # Clean up ZIP for next iteration
+            rm -f "${{ inputs.theme }}.zip"
+
+            echo "Release $TAG created successfully"
+          done
diff --git a/.releaserc.js b/.releaserc.js
index fda7d12f8..b896672a1 100644
--- a/.releaserc.js
+++ b/.releaserc.js
@@ -1,6 +1,11 @@
-/* eslint-disable @typescript-eslint/no-var-requires */
-
-const { THEMES } = require( './scripts/create-child-releases.js' );
+const THEMES = [
+	'newspack-theme',
+	'newspack-joseph',
+	'newspack-katharine',
+	'newspack-nelson',
+	'newspack-sacha',
+	'newspack-scott',
+];
 
 module.exports = {
 	branches: [
diff --git a/package-lock.json b/package-lock.json
index cb353fdca..398004b52 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22652,8 +22652,8 @@
 		},
 		"node_modules/newspack-scripts": {
 			"version": "5.8.0",
-			"resolved": "https://registry.npmjs.org/newspack-scripts/-/newspack-scripts-5.8.0.tgz",
-			"integrity": "sha512-INOymPHxavzLFziqa9zcfB9KRfi9w+FOwq1cNj8IKnfBSlWrYMLsw43LMgAk7wrGtv6crvHEREweHhPGWMAtGQ==",
+			"resolved": "git+ssh://git@github.com/Automattic/newspack-scripts.git#1b654fae0446656ac8221ae7400a42bbd80b2140",
+			"integrity": "sha512-NzUACVvKJJLiYXtFIHmxZNzVsqmYJmW0HuzUpNa3Y/pJEUK1QfqWk+SCACTyDx7zXoNlIvjBTbNUD6R1zSF72w==",
 			"dev": true,
 			"license": "ISC",
 			"dependencies": {
diff --git a/scripts/create-child-releases.js b/scripts/create-child-releases.js
deleted file mode 100644
index 0da4f82a8..000000000
--- a/scripts/create-child-releases.js
+++ /dev/null
@@ -1,98 +0,0 @@
-/* eslint-disable no-console, @typescript-eslint/no-var-requires */
-
-const { basename, resolve } = require( 'path' );
-const { stat, readFile } = require( 'fs-extra' );
-const { Octokit } = require( '@octokit/rest' );
-
-const THEMES = [
-	'newspack-theme',
-	'newspack-joseph',
-	'newspack-katharine',
-	'newspack-nelson',
-	'newspack-sacha',
-	'newspack-scott',
-];
-
-/**
- * Because all the themes are in a monorepo, some internal processes
- * have a hard time automatically deploying the changes. For this reason
- * the themes have individual repos just for the releases.
- * These releases are automatically published using this script.
- */
-const createExternalReleasesOfThemes = async () => {
-	const { version } = require( '../package.json' );
-
-	const TOKEN = process.env.GITHUB_TOKEN || process.env.GH_TOKEN;
-
-	if ( ! TOKEN ) {
-		console.error( 'Missing github token.' );
-		process.exit( 1 );
-	}
-
-	const octokit = new Octokit( {
-		auth: TOKEN,
-		request: {
-			fetch,
-		},
-	} );
-
-	const RELEASES = THEMES.map( name => ( {
-		filePath: resolve( __dirname, `../release/${ name }.zip` ),
-		repoName: `${ name }-theme`,
-	} ) );
-
-	const owner = 'Automattic';
-
-	RELEASES.forEach( async ( { filePath, repoName } ) => {
-		console.log( `Crating a release for ${ owner }/${ repoName }…` );
-
-		const {
-			data: { upload_url: uploadUrl, id: releaseId },
-		} = await octokit.repos.createRelease( {
-			owner,
-			repo: repoName,
-			tag_name: `v${ version }`,
-			name: `v${ version }`,
-			body: `Release v${ version }`,
-			// We'll create a draft release, append the assets to it, and then publish it.
-			// This is so that the assets are available when we get a Github release event.
-			draft: true,
-		} );
-
-		const file = await stat( resolve( filePath ) );
-		const upload = {
-			url: uploadUrl,
-			data: await readFile( filePath ),
-			name: basename( filePath ),
-			headers: {
-				'content-type': 'application/zip',
-				'content-length': file.size,
-			},
-		};
-
-		const {
-			data: { browser_download_url: downloadUrl },
-		} = await octokit.repos.uploadReleaseAsset( upload );
-
-		console.log( `Published file ${ downloadUrl }` );
-		const {
-			data: { html_url: url },
-		} = await octokit.repos.updateRelease( {
-			owner,
-			repo: repoName,
-			release_id: releaseId,
-			draft: false,
-		} );
-
-		console.log( `Published GitHub release: ${ url }` );
-	} );
-};
-
-if ( process.argv.some( arg => arg.startsWith( '--run' ) ) ) {
-	createExternalReleasesOfThemes();
-}
-
-// Export for use of semantic-release config.
-module.exports = {
-	THEMES,
-};