diff --git a/.github/workflows/build-test.yaml b/.github/workflows/build-test.yaml
new file mode 100644
index 0000000..d146ff9
--- /dev/null
+++ b/.github/workflows/build-test.yaml
@@ -0,0 +1,78 @@
+name: Build test
+
+on:
+  pull_request:
+
+permissions:
+  contents: read
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    env:
+      DART_SASS_VERSION: 1.97.2
+      GO_VERSION: 1.25.5
+      HUGO_VERSION: 0.155.1
+      NODE_VERSION: 24.12.0
+      TZ: Europe/Lisbon
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+        with:
+          submodules: recursive
+          fetch-depth: 0
+
+      - name: Setup Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: ${{ env.GO_VERSION }}
+          cache: false
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Create directory for user-specific executable files
+        run: mkdir -p "${HOME}/.local"
+
+      - name: Install Dart Sass
+        run: |
+          curl -sLJO "https://github.com/sass/dart-sass/releases/download/${DART_SASS_VERSION}/dart-sass-${DART_SASS_VERSION}-linux-x64.tar.gz"
+          tar -C "${HOME}/.local" -xf "dart-sass-${DART_SASS_VERSION}-linux-x64.tar.gz"
+          rm "dart-sass-${DART_SASS_VERSION}-linux-x64.tar.gz"
+          echo "${HOME}/.local/dart-sass" >> "${GITHUB_PATH}"
+
+      - name: Install Hugo
+        run: |
+          curl -sLJO "https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_extended_${HUGO_VERSION}_linux-amd64.tar.gz"
+          mkdir "${HOME}/.local/hugo"
+          tar -C "${HOME}/.local/hugo" -xf "hugo_extended_${HUGO_VERSION}_linux-amd64.tar.gz"
+          rm "hugo_extended_${HUGO_VERSION}_linux-amd64.tar.gz"
+          echo "${HOME}/.local/hugo" >> "${GITHUB_PATH}"
+
+      - name: Install Node.js dependencies
+        run: npm ci
+
+      - name: Generate PDF Resume
+        run: npm run generate-resume
+
+      - name: Build the site
+        run: hugo --gc --minify --cacheDir "${{ runner.temp }}/hugo_cache"
+
+      - name: Test the rendered site
+        run: npm run test:site
+        env:
+          SITE_TEST_RESULTS_DIR: ${{ runner.temp }}/site-test-results
+
+      - name: Upload browser screenshots
+        if: always()
+        uses: actions/upload-artifact@v4.6.2
+        with:
+          name: site-rendered-screenshots
+          path: ${{ runner.temp }}/site-test-results/
+          if-no-files-found: ignore
diff --git a/package.json b/package.json
index acd4fdc..2c4d144 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,8 @@
     "typeit": "^8.8.7"
   },
   "scripts": {
-    "generate-resume": "node scripts/generate-resume.js"
+    "generate-resume": "node scripts/generate-resume.js",
+    "test:site": "node tests/site-smoke-test.js"
   },
   "name": "suvl.github.io",
   "version": "0.1.0",
diff --git a/tests/site-smoke-test.js b/tests/site-smoke-test.js
new file mode 100644
index 0000000..90d6803
--- /dev/null
+++ b/tests/site-smoke-test.js
@@ -0,0 +1,165 @@
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const http = require('node:http');
+const os = require('node:os');
+const path = require('node:path');
+const puppeteer = require('puppeteer');
+
+const publicDir = path.resolve(__dirname, '..', 'public');
+const resultsDir = process.env.SITE_TEST_RESULTS_DIR || path.join(os.tmpdir(), 'site-smoke-test');
+const maxHorizontalOverflow = 4;
+const contentTypes = {
+  '.css': 'text/css',
+  '.html': 'text/html',
+  '.js': 'text/javascript',
+  '.json': 'application/json',
+  '.png': 'image/png',
+  '.jpg': 'image/jpeg',
+  '.jpeg': 'image/jpeg',
+  '.svg': 'image/svg+xml',
+  '.woff': 'font/woff',
+  '.woff2': 'font/woff2'
+};
+
+async function main() {
+  assert.ok(fs.existsSync(path.join(publicDir, 'index.html')), 'Hugo output is missing public/index.html');
+  fs.mkdirSync(resultsDir, { recursive: true });
+
+  const server = http.createServer((request, response) => {
+    let pathname;
+    try {
+      pathname = decodeURIComponent(new URL(request.url, 'http://localhost').pathname);
+    } catch {
+      response.writeHead(400).end('Bad request');
+      return;
+    }
+
+    const filePath = path.resolve(publicDir, `.${pathname}`);
+    if (filePath !== publicDir && !filePath.startsWith(`${publicDir}${path.sep}`)) {
+      response.writeHead(403).end('Forbidden');
+      return;
+    }
+
+    let target = filePath;
+    try {
+      if (fs.statSync(target).isDirectory()) target = path.join(target, 'index.html');
+    } catch {
+      response.writeHead(404).end('Not found');
+      return;
+    }
+
+    fs.createReadStream(target)
+      .on('error', () => response.writeHead(404).end('Not found'))
+      .on('open', () => {
+        response.writeHead(200, {
+          'Content-Type': contentTypes[path.extname(target)] || 'application/octet-stream'
+        });
+      })
+      .pipe(response);
+  });
+
+  await new Promise(resolve => server.listen(0, '127.0.0.1', resolve));
+  const address = server.address();
+  let browser;
+  try {
+    browser = await puppeteer.launch({ headless: true, args: ['--no-sandbox', '--disable-setuid-sandbox'] });
+    const page = await browser.newPage();
+    await page.setViewport({ width: 1440, height: 1000 });
+    const pageErrors = [];
+    const failedAssets = [];
+    page.on('pageerror', error => pageErrors.push(error.message));
+    page.on('response', response => {
+      const url = new URL(response.url());
+      if (url.host === `127.0.0.1:${address.port}` && response.status() >= 400 && url.pathname !== '/favicon.ico') {
+        failedAssets.push(`${response.status()} ${url.pathname}`);
+      }
+    });
+
+    const response = await page.goto(`http://127.0.0.1:${address.port}/`, { waitUntil: 'networkidle2' });
+    assert.equal(response.status(), 200, 'Home page did not return HTTP 200');
+    await page.evaluate(() => document.fonts.ready);
+
+    const desktop = await page.evaluate(() => {
+      const requiredSections = ['about', 'skills', 'experiences', 'education', 'accomplishments'];
+      const missingSections = requiredSections.filter(id => !document.getElementById(id));
+      const brokenAnchors = [...document.querySelectorAll('a[href^="#"]')]
+        .map(link => link.getAttribute('href').slice(1))
+        .filter(id => id && !document.getElementById(id));
+
+      return {
+        title: document.title,
+        text: document.body.innerText,
+        missingSections,
+        brokenAnchors,
+        viewportWidth: window.innerWidth,
+        documentWidth: document.documentElement.scrollWidth,
+        documentHeight: document.documentElement.scrollHeight,
+        stylesheets: document.styleSheets.length
+      };
+    });
+
+    assert.match(desktop.title, /João Trigo Soares/, 'Page title is missing the site owner name');
+    for (const expected of ['Platforms Engineering Team Lead', 'NOS Inovação', 'Kubernetes']) {
+      assert.ok(desktop.text.includes(expected), `Page is missing expected content: ${expected}`);
+    }
+    assert.deepEqual(desktop.missingSections, [], 'One or more expected page sections are missing');
+    assert.deepEqual(desktop.brokenAnchors, [], 'A section navigation link has no matching target');
+    assert.ok(desktop.stylesheets > 0, 'No stylesheets were loaded');
+    assert.ok(desktop.documentHeight > 0, 'The page has no rendered content');
+    assert.ok(
+      desktop.documentWidth <= desktop.viewportWidth + maxHorizontalOverflow,
+      'Desktop layout overflows horizontally'
+    );
+    await page.screenshot({ path: path.join(resultsDir, 'desktop.png'), fullPage: true });
+
+    await page.setViewport({ width: 390, height: 844 });
+    await page.reload({ waitUntil: 'networkidle2' });
+    const mobile = await page.evaluate(() => {
+      const overflowingElements = [...document.body.querySelectorAll('*')]
+        .map(element => {
+          const rect = element.getBoundingClientRect();
+          return {
+            element: element.tagName.toLowerCase(),
+            id: element.id,
+            className: typeof element.className === 'string' ? element.className : '',
+            left: Math.round(rect.left),
+            right: Math.round(rect.right),
+            width: Math.round(rect.width),
+            scrollWidth: element.scrollWidth,
+            clientWidth: element.clientWidth
+          };
+        })
+        .filter(element => element.right > window.innerWidth + 1)
+        .sort((a, b) => b.right - a.right)
+        .slice(0, 15);
+
+      return {
+        viewportWidth: window.innerWidth,
+        documentWidth: document.documentElement.scrollWidth,
+        bodyWidth: document.body.scrollWidth,
+        documentHeight: document.documentElement.scrollHeight,
+        overflowingElements
+      };
+    });
+    await page.screenshot({ path: path.join(resultsDir, 'mobile.png'), fullPage: true });
+    console.log(`Mobile layout diagnostics: ${JSON.stringify(mobile)}`);
+    assert.ok(mobile.documentHeight > 0, 'The mobile page has no rendered content');
+    assert.ok(
+      mobile.documentWidth <= mobile.viewportWidth + maxHorizontalOverflow,
+      `Mobile layout overflows horizontally (${mobile.documentWidth}px document, ${mobile.viewportWidth}px viewport)`
+    );
+    assert.deepEqual(pageErrors, [], `The page raised JavaScript errors: ${pageErrors.join('; ')}`);
+    assert.deepEqual(failedAssets, [], `The page failed to load local assets: ${failedAssets.join('; ')}`);
+
+    console.log(`Site smoke test passed at desktop (${desktop.viewportWidth}px) and mobile (${mobile.viewportWidth}px).`);
+    console.log(`Screenshots saved to ${resultsDir}`);
+  } finally {
+    await browser?.close();
+    await new Promise((resolve, reject) => server.close(error => error ? reject(error) : resolve()));
+  }
+}
+
+main().catch(error => {
+  console.error(error);
+  process.exitCode = 1;
+});