diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..6605392
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,287 @@
+name: CI
+
+on:
+  push:
+    branches: [main, dev]
+  pull_request:
+    branches: [main, dev]
+
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: write
+  packages: write
+
+env:
+  REGISTRY: git.farh.net
+  IMAGE_NAME: cartsnitch/api
+
+jobs:
+  lint:
+    runs-on: runners-cartsnitch
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: pip
+      - run: pip install ruff
+      - name: Ruff lint
+        run: ruff check .
+      - name: Ruff format check
+        run: ruff format --check .
+
+  typecheck:
+    runs-on: runners-cartsnitch
+    continue-on-error: true
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: pip
+      - name: Install system dependencies
+        run: sudo apt-get update && sudo apt-get install -y libpq-dev build-essential
+      - run: pip install -e ".[dev]" mypy
+      - name: Type check
+        run: mypy src/cartsnitch_api
+
+  test:
+    runs-on: runners-cartsnitch
+    services:
+      postgres:
+        image: postgres:15-alpine
+        env:
+          POSTGRES_USER: cartsnitch
+          POSTGRES_PASSWORD: cartsnitch_test
+          POSTGRES_DB: cartsnitch_test
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+      redis:
+        image: redis:7-alpine
+        ports:
+          - 6379:6379
+        options: >-
+          --health-cmd "redis-cli ping"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+    env:
+      CARTSNITCH_DATABASE_URL: postgresql+asyncpg://cartsnitch:cartsnitch_test@localhost:5432/cartsnitch_test
+      CARTSNITCH_REDIS_URL: redis://localhost:6379/0
+      CARTSNITCH_JWT_SECRET_KEY: test-secret-do-not-use-in-prod
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: pip
+      - name: Install system dependencies
+        run: sudo apt-get update && sudo apt-get install -y libpq-dev build-essential
+      - run: pip install -e ".[dev]"
+      - name: Run tests
+        run: pytest --tb=short -q
+
+  build-and-push:
+    runs-on: runners-cartsnitch
+    needs: [lint, test]
+    outputs:
+      calver_tag: ${{ steps.calver.outputs.version }}
+      sha_tag: sha-${{ github.sha }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Generate CalVer tag
+        id: calver
+        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+        run: |
+          DATE_TAG=$(date -u +%Y.%m.%d)
+          EXISTING=$(git tag -l "v${DATE_TAG}*" | sort -V | tail -1)
+          if [ -z "$EXISTING" ]; then
+            VERSION="$DATE_TAG"
+          elif [ "$EXISTING" = "v${DATE_TAG}" ]; then
+            VERSION="${DATE_TAG}.2"
+          else
+            BUILD_NUM=$(echo "$EXISTING" | sed "s/v${DATE_TAG}\.//")
+            VERSION="${DATE_TAG}.$((BUILD_NUM + 1))"
+          fi
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+          echo "CalVer tag: $VERSION"
+
+      - name: Log in to Gitea Container Registry
+        run: echo "${{ github.token }}" | docker login git.farh.net -u ${{ github.actor }} --password-stdin
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=sha,prefix=sha-,format=long
+            type=raw,value=${{ steps.calver.outputs.version }},enable=${{ github.ref == 'refs/heads/main' }}
+            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
+
+      - name: Build Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          load: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            APT_CACHE_BUST=${{ github.run_id }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Scan api image for vulnerabilities
+        uses: anchore/scan-action@v5
+        id: scan
+        env:
+          GRYPE_CONFIG: .grype.yaml
+        with:
+          image: "${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:sha-${{ github.sha }}"
+          fail-build: true
+          severity-cutoff: high
+          only-fixed: "true"
+          output-format: sarif
+
+      - name: Upload api scan results to GitHub Security
+        uses: github/codeql-action/upload-sarif@v3
+        if: always()
+        with:
+          sarif_file: ${{ steps.scan.outputs.sarif }}
+
+      - name: Push Docker image
+        if: github.event_name == 'push'
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            APT_CACHE_BUST=${{ github.run_id }}
+          cache-from: type=gha
+
+      - name: Create git tag
+        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+        run: |
+          git tag "v${{ steps.calver.outputs.version }}"
+          git push origin "v${{ steps.calver.outputs.version }}"
+
+  deploy-dev:
+    runs-on: runners-cartsnitch
+    needs: [build-and-push]
+    if: always() && !cancelled() && github.event_name == 'push' && (github.ref == 'refs/heads/dev' || github.ref == 'refs/heads/main')
+    steps:
+      - name: Generate GitHub App token
+        id: app-token
+        uses: actions/create-github-app-token@v1
+        with:
+          app-id: ${{ secrets.CARTSNITCH_APP_ID }}
+          private-key: ${{ secrets.CARTSNITCH_APP_PRIVATE_KEY }}
+          owner: ${{ github.repository_owner }}
+          repositories: infra
+
+      - name: Checkout infra repo
+        uses: actions/checkout@v4
+        with:
+          repository: cartsnitch/infra
+          token: ${{ steps.app-token.outputs.token }}
+          ref: main
+          path: infra
+
+      - name: Install kubectl
+        uses: azure/setup-kubectl@v4
+
+      - name: Install kustomize
+        uses: imranismail/setup-kustomize@v2
+
+      - name: Determine image tag
+        id: api_tag
+        run: |
+          if [ "${{ github.ref }}" == "refs/heads/main" ]; then
+            echo "tag=${{ needs.build-and-push.outputs.calver_tag }}" >> "$GITHUB_OUTPUT"
+          else
+            echo "tag=${{ needs.build-and-push.outputs.sha_tag }}" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Update api image tag
+        if: needs.build-and-push.result == 'success'
+        run: |
+          cd infra/apps/overlays/dev
+          kustomize edit set image ghcr.io/cartsnitch/api:${{ steps.api_tag.outputs.tag }}
+
+      - name: Commit and push to infra
+        run: |
+          cd infra
+          git config user.name "cartsnitch-ci[bot]"
+          git config user.email "cartsnitch-ci[bot]@users.noreply.github.com"
+          git add apps/overlays/dev/kustomization.yaml
+          git commit -m "ci(dev): update api image"
+          git pull --rebase origin main
+          git push origin main
+
+  deploy-uat:
+    runs-on: runners-cartsnitch
+    needs: [build-and-push]
+    if: always() && !cancelled() && github.event_name == 'push' && (github.ref == 'refs/heads/uat' || github.ref == 'refs/heads/main')
+    steps:
+      - name: Generate GitHub App token
+        id: app-token
+        uses: actions/create-github-app-token@v1
+        with:
+          app-id: ${{ secrets.CARTSNITCH_APP_ID }}
+          private-key: ${{ secrets.CARTSNITCH_APP_PRIVATE_KEY }}
+          owner: ${{ github.repository_owner }}
+          repositories: infra
+
+      - name: Checkout infra repo
+        uses: actions/checkout@v4
+        with:
+          repository: cartsnitch/infra
+          token: ${{ steps.app-token.outputs.token }}
+          ref: main
+          path: infra
+
+      - name: Install kubectl
+        uses: azure/setup-kubectl@v4
+
+      - name: Install kustomize
+        uses: imranismail/setup-kustomize@v2
+
+      - name: Determine image tag
+        id: api_tag
+        run: |
+          if [ "${{ github.ref }}" == "refs/heads/main" ]; then
+            echo "tag=${{ needs.build-and-push.outputs.calver_tag }}" >> "$GITHUB_OUTPUT"
+          else
+            echo "tag=${{ needs.build-and-push.outputs.sha_tag }}" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Update api image tag
+        if: needs.build-and-push.result == 'success'
+        run: |
+          cd infra/apps/overlays/uat
+          kustomize edit set image ghcr.io/cartsnitch/api:${{ steps.api_tag.outputs.tag }}
+
+      - name: Commit and push to infra
+        run: |
+          cd infra
+          git config user.name "cartsnitch-ci[bot]"
+          git config user.email "cartsnitch-ci[bot]@users.noreply.github.com"
+          git add apps/overlays/uat/kustomization.yaml
+          git commit -m "ci(uat): update api image"
+          git pull --rebase origin main
+          git push origin main
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