diff --git a/.github/workflows/ci-cd.yml b/.github/workflows/ci-cd.yml
index 15339de8..986b5f82 100644
--- a/.github/workflows/ci-cd.yml
+++ b/.github/workflows/ci-cd.yml
@@ -84,6 +84,47 @@ jobs:
         if: always() && ! cancelled()
         run: docker compose logs
 
+  use-case-tests:
+    if: |
+      ! cancelled() && always() &&
+      (needs.check-auto-tagging-will-work.result == 'skipped' || needs.check-auto-tagging-will-work.result == 'success') &&
+      ! startsWith(github.ref, 'refs/tags')
+    needs:
+      - check-auto-tagging-will-work
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Use .env.example
+        run: cp .env.example .env
+
+      - name: Get python Container
+        run: docker pull python:3.10
+
+      - name: Install latest Vespa CLI
+        env:
+          VESPA_CLI_VERSION: 8.250.43
+        run: |
+          mkdir -p scripts/vespa-cli
+          curl -fsSL https://github.com/vespa-engine/vespa/releases/download/v${VESPA_CLI_VERSION}/vespa-cli_${VESPA_CLI_VERSION}_linux_amd64.tar.gz | \
+            tar -zxf - -C scripts/vespa-cli --strip-component=1
+          echo "scripts/vespa-cli/bin" >> $GITHUB_PATH
+
+      - name: Build
+        run: |
+          docker compose build
+          docker images
+
+      - name: Build docker-compose stack & Setup vespa for search
+        run: make start
+
+      - name: Run backend Use Case tests
+        run: make test_use_cases
+
+      - name: Log Dump
+        if: always() && ! cancelled()
+        run: docker compose logs
+
   search-tests:
     if: |
       ! cancelled() && always() &&
@@ -142,6 +183,7 @@ jobs:
       ! cancelled() && always() &&
       (needs.code-quality.result == 'success' &&
       needs.non-search-tests.result == 'success' &&
+      needs.use-case-tests.result == 'success' &&
       needs.search-tests.result == 'success' &&
       needs.integration-tests.result == 'success') &&
       ! startsWith(github.ref, 'refs/tags')
@@ -149,6 +191,7 @@ jobs:
     needs:
       - code-quality
       - non-search-tests
+      - use-case-tests
       - search-tests
       - integration-tests
     steps:
diff --git a/makefile-docker.defs b/makefile-docker.defs
index 276a67f0..48736a86 100644
--- a/makefile-docker.defs
+++ b/makefile-docker.defs
@@ -113,14 +113,25 @@ test_search:
 		-vvv tests/search \
 		-m 'search' ${ARGS}
 
-test_cors: 
+.ONESHELL:
+test_use_cases:
+	docker compose \
+		-f docker-compose.yml \
+		-f docker-compose.dev.yml \
+		run --rm --name search_test \
+		-v "${PWD}/data:/data" \
+		backend pytest \
+		-vvv tests/use-cases \
+		-m 'use_case' ${ARGS}
+
+test_cors:
 	docker compose -f docker-compose.yml -f docker-compose.dev.yml run --rm backend pytest -vvv -m 'cors' ${ARGS}
 
 test_unit:
 	docker compose -f docker-compose.yml -f docker-compose.dev.yml run --rm backend pytest -vvv tests/unit ${ARGS}
 
 test_non_search:
-	docker compose -f docker-compose.yml -f docker-compose.dev.yml run --rm backend pytest -vvv -m 'not search' ${ARGS}
+	docker compose -f docker-compose.yml -f docker-compose.dev.yml run --rm backend pytest -vvv -m 'not search and not use_case' ${ARGS}
 
 test:
 	docker compose -f docker-compose.yml -f docker-compose.dev.yml run --rm backend pytest -vvv ${ARGS}
diff --git a/tests/use-cases/test_mcf_uc.py b/tests/use-cases/test_mcf_uc.py
new file mode 100644
index 00000000..01e33d96
--- /dev/null
+++ b/tests/use-cases/test_mcf_uc.py
@@ -0,0 +1,58 @@
+from unittest.mock import patch
+
+import pytest
+
+from app.api.api_v1.routers import search
+from app.repository.lookups import get_country_slug_from_country_code
+from tests.search.vespa.setup_search_tests import (
+    VESPA_FIXTURE_COUNT,
+    _make_search_request,
+    _populate_db_families,
+)
+
+
+@pytest.mark.use_case
+@patch(
+    "app.api.api_v1.routers.search.AppTokenFactory.verify_corpora_in_db",
+    return_value=True,
+)
+@pytest.mark.parametrize("label,query", [("search", "the"), ("browse", "")])
+def test_keyword_country_filters__geographies(
+    mock_corpora_exist_in_db,
+    label,
+    query,
+    test_vespa,
+    data_client,
+    data_db,
+    monkeypatch,
+    valid_token,
+):
+    monkeypatch.setattr(search, "_VESPA_CONNECTION", test_vespa)
+    _populate_db_families(data_db)
+    base_params = {"query_string": query}
+
+    # Get all documents and iterate over their country codes to confirm that each are
+    # the specific one that is returned in the query (as they each have a unique
+    # country code)
+    all_body = _make_search_request(data_client, valid_token, params=base_params)
+    families = [f for f in all_body["families"]]
+    assert len(families) == VESPA_FIXTURE_COUNT
+
+    for family in families:
+        for country_code in family["family_geographies"]:
+            country_slug = get_country_slug_from_country_code(data_db, country_code)
+
+            params = {
+                **base_params,
+                **{"keyword_filters": {"countries": [country_slug]}},
+            }
+            body_with_filters = _make_search_request(
+                data_client, valid_token, params=params
+            )
+            filtered_family_slugs = [
+                f["family_slug"] for f in body_with_filters["families"]
+            ]
+            assert len(filtered_family_slugs) == 1
+            assert family["family_slug"] in filtered_family_slugs
+
+    assert mock_corpora_exist_in_db.assert_called