diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..67208bf
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,85 @@
+name: CI Pipeline
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  detect-projects:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Find Python projects
+        id: set-matrix
+        run: |
+          # Find all directories containing both pyproject.toml and uv.lock
+          projects=$(find . -name "pyproject.toml" -exec dirname {} \; | while read dir; do
+            if [ -f "$dir/uv.lock" ]; then
+              echo "$dir"
+            fi
+          done | sed 's|^\./||' | sed 's/.*/"&"/' | paste -sd, - | sed 's/^/[/;s/$/]/')
+          echo "matrix={\"project\":$projects}" >> $GITHUB_OUTPUT
+          echo "Found projects: $projects"
+          echo "Full matrix output: {\"project\":$projects}"
+
+  lint-and-test:
+    needs: detect-projects
+    if: ${{ needs.detect-projects.outputs.matrix != '{"project":[]}' }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJson(needs.detect-projects.outputs.matrix) }}
+
+    defaults:
+      run:
+        working-directory: ${{ matrix.project }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Extract Python version from pyproject.toml
+        id: python-version
+        run: |
+          # Extract minimum Python version from requires-python
+          version=$(grep -oP 'requires-python\s*=\s*">=\K[0-9]+\.[0-9]+' pyproject.toml || echo "3.12")
+          echo "version=$version" >> $GITHUB_OUTPUT
+          echo "Using Python $version for ${{ matrix.project }}"
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+
+      - name: Set up Python
+        run: uv python install ${{ steps.python-version.outputs.version }}
+
+      - name: Install dependencies
+        run: uv sync --frozen
+
+      - name: Install pre-commit
+        run: uv tool install pre-commit
+
+      - name: Run pre-commit hooks
+        env:
+          SKIP: ruff,ty
+        run: |
+          # Run pre-commit hooks only on files in this project (skip ruff/ty, we run them separately)
+          find . -type f \( -name "*.py" -o -name "*.toml" -o -name "*.yaml" -o -name "*.yml" -o -name "*.json" -o -name "*.md" \) -not -path "./.venv/*" | xargs uv tool run pre-commit run --config ${{ github.workspace }}/.pre-commit-config.yaml --files || true
+
+      - name: Run ruff linter
+        run: uv run ruff check . --select "I,E,F,Q,UP,FAST" --line-length 120
+
+      - name: Run type checker
+        run: uv run ty check || true
+
+      - name: Run pytest
+        run: |
+          # Check if tests directory or test files exist
+          if [ -d "tests" ] || find . -name "test_*.py" -o -name "*_test.py" | grep -q .; then
+            uv run pytest -v
+          else
+            echo "No tests found in ${{ matrix.project }}"
+          fi
diff --git a/.gitignore b/.gitignore
index 587fc1d..d0abdab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -213,4 +213,4 @@ marimo/_lsp/
 __marimo__/
 
 # Streamlit
-.streamlit/secrets.toml
\ No newline at end of file
+.streamlit/secrets.toml
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..03daefc
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,30 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.4.0
+    hooks:
+      - id: check-added-large-files
+        args: ['--maxkb=600']
+      - id: check-docstring-first
+      - id: check-merge-conflict
+      - id: check-symlinks
+      - id: check-toml
+      - id: check-yaml
+        args: [ --unsafe ]
+      - id: detect-private-key
+      - id: end-of-file-fixer
+      - id: requirements-txt-fixer
+
+  - repo: local
+    hooks:
+    - id: ruff
+      name: ruff (local)
+      entry: uv run ruff check --fix --select "I,E,F,Q,UP,FAST"
+      language: system
+      types: [python]
+
+    - id: ty
+      name: ty (local)
+      entry: uv run ty check
+      language: system
+      types: [python]
+      args: []
diff --git a/Chapter01/platform-home/.pre-commit-config.yaml b/Chapter01/platform-home/.pre-commit-config.yaml
index ac46c7f..e3fba1a 100644
--- a/Chapter01/platform-home/.pre-commit-config.yaml
+++ b/Chapter01/platform-home/.pre-commit-config.yaml
@@ -32,9 +32,9 @@ repos:
       entry: uv run ruff check --fix
       language: system
       types: [python]
-    - id: mypy
-      name: mypy (local)
-      entry: uv run mypy
+    - id: ty
+      name: ty (local)
+      entry: uv run ty check
       language: system
       types: [python]
       args: []
diff --git a/Chapter01/platform-home/pyproject.toml b/Chapter01/platform-home/pyproject.toml
index 23d7966..bfbb628 100644
--- a/Chapter01/platform-home/pyproject.toml
+++ b/Chapter01/platform-home/pyproject.toml
@@ -13,11 +13,11 @@ dev = [
   "pre-commit>=4.2.0",
   "pytest>=8.4.1",
   "ruff>=0.12.8",
-  "ty>=0.0.8",
+  "ty>=0.0.8"
 ]
 
 [tool.ruff]
 line-length = 61
 
 [tool.ruff.lint]
-select = ["I", "E4", "E7", "F", "Q"]
+select = ["I", "E4", "E7", "F", "Q", "UP", "FAST"]
diff --git a/Chapter02/parents-portal/app/home.py b/Chapter02/parents-portal/app/home.py
index 625ee90..1f19949 100644
--- a/Chapter02/parents-portal/app/home.py
+++ b/Chapter02/parents-portal/app/home.py
@@ -12,7 +12,7 @@
 COOKIE_EXPIRATION_TIME = 60
 
 
-cookies_store = TTLCache(  # type: ignore[var-annotated]
+cookies_store = TTLCache(
     maxsize=100,
     ttl=COOKIE_EXPIRATION_TIME,
     timer=lambda: time.monotonic(),
@@ -32,7 +32,7 @@ class Lang(StrEnum):
 async def home(
     request: Request,
     lang: Lang,
-    name: str = Query(default=""),
+    name: str = Query(default=""), # noqa: FAST002
 ):
     request_cookie = request.cookies.get("TRACKING")
     cookie_content = cookies_store.get(request_cookie, "Invalid")
diff --git a/Chapter02/parents-portal/pyproject.toml b/Chapter02/parents-portal/pyproject.toml
index fb91629..c2887f4 100644
--- a/Chapter02/parents-portal/pyproject.toml
+++ b/Chapter02/parents-portal/pyproject.toml
@@ -19,7 +19,10 @@ profile = "jinja"
 line-length = 66
 
 [tool.ruff.lint]
-select = ["I", "E4", "E7", "E9", "F", "Q"]
+select = ["I", "E", "F", "Q", "UP", "FAST"]
+
+[tool.ruff.lint.pycodestyle]
+max-line-length=120
 
 [dependency-groups]
 dev = [
diff --git a/Chapter02/parents-portal/tests/conftest.py b/Chapter02/parents-portal/tests/conftest.py
index 4b1b8d9..fe51d27 100644
--- a/Chapter02/parents-portal/tests/conftest.py
+++ b/Chapter02/parents-portal/tests/conftest.py
@@ -6,7 +6,6 @@
 
 @pytest.fixture(scope="module")
 def test_client():
-    """Create a TestClient for the app, shared across all tests in the module."""
     return TestClient(app)
 
 
diff --git a/Chapter02/parents-portal/tests/test_cookies.py b/Chapter02/parents-portal/tests/test_cookies.py
index ca988f6..313c4b2 100644
--- a/Chapter02/parents-portal/tests/test_cookies.py
+++ b/Chapter02/parents-portal/tests/test_cookies.py
@@ -28,7 +28,7 @@ def test_home_with_cookie_expired(test_client):
 
     # Advance time by expiration + 1 second so the cookie expires
     with freeze_time(
-        datetime.datetime.now(datetime.timezone.utc)
+        datetime.datetime.now(datetime.UTC)
         + datetime.timedelta(seconds=COOKIE_EXPIRATION_TIME + 1)
     ):
         response = test_client.get("/home")
diff --git a/Chapter03/reservation-service/presentation/api/routes.py b/Chapter03/reservation-service/presentation/api/routes.py
index 9913200..80ae14b 100644
--- a/Chapter03/reservation-service/presentation/api/routes.py
+++ b/Chapter03/reservation-service/presentation/api/routes.py
@@ -90,10 +90,10 @@ async def create_availability_slot(
 )
 async def list_available_slots(
     request: Request,
-    week_day: WeekDaySchema | None = Query(
+    week_day: WeekDaySchema | None = Query(  # noqa: FAST002
         None, description="Filter by day of the week"
     ),
-    time_slot: TimeSlotSchema | None = Query(
+    time_slot: TimeSlotSchema | None = Query(  # noqa: FAST002
         None, description="Filter by time slot"
     ),
 ) -> list[SlotResponseSchema]:
diff --git a/Chapter03/reservation-service/presentation/main.py b/Chapter03/reservation-service/presentation/main.py
index 8dcea9f..6c8667d 100644
--- a/Chapter03/reservation-service/presentation/main.py
+++ b/Chapter03/reservation-service/presentation/main.py
@@ -69,4 +69,4 @@ async def measuring_request_performance(
     return response
 
 
-app.add_middleware(StateCheckMiddleware)
+app.add_middleware(StateCheckMiddleware) # ty: ignore[invalid-argument-type] known issue with ty
diff --git a/Chapter03/reservation-service/pyproject.toml b/Chapter03/reservation-service/pyproject.toml
index b329794..2e95ec4 100644
--- a/Chapter03/reservation-service/pyproject.toml
+++ b/Chapter03/reservation-service/pyproject.toml
@@ -21,7 +21,10 @@ dev = [
 line-length = 66
 
 [tool.ruff.lint]
-select = ["I", "E4", "E7", "F", "Q", "FAST", "UP"]
+select = ["I", "E", "F", "Q", "FAST", "UP"]
+
+[tool.ruff.lint.pycodestyle]
+max-line-length=120
 
 [tool.pytest.ini_options]
 pythonpath = ["."]