diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fbcc4a5..3f0822b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -18,6 +18,8 @@ stages:
   - lint
   - build
   - test
+  - sonarqube-check
+  - sonarqube-vulnerability-report
   - oci-build
   - deploy
   - deploy-dev  # New stage for development deployment
@@ -88,6 +90,28 @@ build-ical:
       - data-manager/go.sum
       - data-manager/go.mod
 
+sonarqube-data-manager:
+  stage: sonarqube-check
+  image:
+    name: sonarsource/sonar-scanner-cli:5.0
+    entrypoint: [""]
+  variables:
+    SONAR_USER_HOME: "${CI_PROJECT_DIR}/.sonar"  # Defines the location of the analysis task cache
+    GIT_DEPTH: "0"  # Tells git to fetch all the branches of the project, required by the analysis task
+  cache:
+    key: "${CI_JOB_NAME}"
+    paths:
+      - .sonar/cache
+  script:
+    - cd services/data-manager
+    - sonar-scanner
+  allow_failure: true
+  only:
+    - merge_requests
+    - master
+    - main
+    - develop
+
 build-frontend:
     image: node:lts
     stage: build
diff --git a/services/data-manager/sonar-project.properties b/services/data-manager/sonar-project.properties
new file mode 100644
index 0000000..a0ad568
--- /dev/null
+++ b/services/data-manager/sonar-project.properties
@@ -0,0 +1,2 @@
+sonar.projectKey=HTWKalender
+sonar.qualitygate.wait=true