diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 639afcb..1d765c0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -35,3 +35,11 @@ phpstan:
   script:
     - composer install --no-scripts
     - php vendor/bin/phpstan --dry-run
+
+easy-coding-standard:
+  stage: static-analysis
+  image: $CI_REGISTRY_IMAGE/pipeline-runner:$CI_COMMIT_REF_SLUG
+  script:
+    - composer install --no-scripts
+    - php vendor/bin/ecs
+
diff --git a/composer.json b/composer.json
index 8499cf5..3564a2b 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,8 @@
     "require-dev": {
         "phpstan/phpstan": "^1.10",
         "rector/rector": "^0.17.2",
-        "phpunit/phpunit": "~9.6"
+        "phpunit/phpunit": "~9.6",
+        "symplify/easy-coding-standard": "^11.5"
     },
     "config": {
         "allow-plugins": {
diff --git a/ecs.php b/ecs.php
new file mode 100644
index 0000000..0061ea7
--- /dev/null
+++ b/ecs.php
@@ -0,0 +1,19 @@
+<?php
+
+use Symplify\EasyCodingStandard\Config\ECSConfig;
+use Symplify\EasyCodingStandard\ValueObject\Set\SetList;
+
+return static function (ECSConfig $ecsConfig): void {
+
+    $ecsConfig->paths([
+        __DIR__ . '/src',
+        __DIR__ . '/tests',
+    ]);
+
+    $ecsConfig->sets([
+        SetList::PSR_12,
+        SetList::STRICT,
+        SetList::CLEAN_CODE,
+        SetList::COMMON,
+    ]);
+};
diff --git a/src/Controller/Mamo/MetricsController.php b/src/Controller/Mamo/MetricsController.php
index 699a993..abb184c 100644
--- a/src/Controller/Mamo/MetricsController.php
+++ b/src/Controller/Mamo/MetricsController.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace MobilisticsGmbH\MamoConnector\Controller\Mamo;
 
 use MobilisticsGmbH\MamoConnector\MobiMamoConnector;
@@ -26,17 +28,17 @@ public function __construct(
     ], methods: ['GET'])]
     public function indexAction(Request $request): Response
     {
-        $secret = $this->systemConfigService->get(MobiMamoConnector::PLUGIN_IDENTIFIER . ".config.secret");
-        if (!is_string($secret)) {
+        $secret = $this->systemConfigService->get(MobiMamoConnector::PLUGIN_IDENTIFIER . '.config.secret');
+        if (! is_string($secret)) {
             // Can only happen, when we change our config template or Shopware itself screws up.
-            $this->logger->error("Configuration Secret is not a string.", [
-                "receivedType" => gettype($secret),
+            $this->logger->error('Configuration Secret is not a string.', [
+                'receivedType' => gettype($secret),
             ]);
             throw new HttpException(500);
         }
 
-        if (!$this->requestAuthorizationService->isAuthorized($request, $secret)) {
-            $this->logger->info("Request is not authorized to access the metrics endpoint.");
+        if (! $this->requestAuthorizationService->isAuthorized($request, $secret)) {
+            $this->logger->info('Request is not authorized to access the metrics endpoint.');
             throw new HttpException(403);
         }
 
diff --git a/src/MobiMamoConnector.php b/src/MobiMamoConnector.php
index 126190d..737d6f5 100644
--- a/src/MobiMamoConnector.php
+++ b/src/MobiMamoConnector.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace MobilisticsGmbH\MamoConnector;
 
@@ -6,5 +8,5 @@
 
 class MobiMamoConnector extends Plugin
 {
-    public const PLUGIN_IDENTIFIER = "MobiMamoConnector";
+    public const PLUGIN_IDENTIFIER = 'MobiMamoConnector';
 }
diff --git a/src/Service/RequestAuthorizationService.php b/src/Service/RequestAuthorizationService.php
index 784bcc3..49974c9 100644
--- a/src/Service/RequestAuthorizationService.php
+++ b/src/Service/RequestAuthorizationService.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace MobilisticsGmbH\MamoConnector\Service;
 
 use Symfony\Component\HttpFoundation\Request;
@@ -8,10 +10,10 @@ class RequestAuthorizationService
 {
     public function isAuthorized(Request $request, string $secret): bool
     {
-        $requestSecret = $request->query->get("secret");
-        if (!is_string($requestSecret)) {
+        $requestSecret = $request->query->get('secret');
+        if (! is_string($requestSecret)) {
             return false;
         }
         return $requestSecret === $secret;
     }
-}
\ No newline at end of file
+}
diff --git a/tests/RequestAuthorizationServiceTest.php b/tests/RequestAuthorizationServiceTest.php
index f26d92e..867f6ab 100644
--- a/tests/RequestAuthorizationServiceTest.php
+++ b/tests/RequestAuthorizationServiceTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace MobilisticsGmbH\MamoConnector\Tests;
 
 use MobilisticsGmbH\MamoConnector\Service\RequestAuthorizationService;
@@ -8,12 +10,12 @@
 
 class RequestAuthorizationServiceTest extends TestCase
 {
-    private const TESTING_SECRET = "dummy-testing-secret";
+    private const TESTING_SECRET = 'dummy-testing-secret';
 
     public function testAuthorizedRequestWhenSecretMatches(): void
     {
         $request = new Request([
-            "secret" => self::TESTING_SECRET,
+            'secret' => self::TESTING_SECRET,
         ]);
 
         $service = new RequestAuthorizationService();
@@ -24,7 +26,7 @@ public function testAuthorizedRequestWhenSecretMatches(): void
     public function testRequestIsUnauthorizedWhenSecretDoesNotMatch(): void
     {
         $request = new Request([
-            "secret" => self::TESTING_SECRET. "-differs",
+            'secret' => self::TESTING_SECRET . '-differs',
         ]);
 
         $service = new RequestAuthorizationService();