diff --git a/backend/.gitattributes b/backend/.gitattributes
deleted file mode 100644
index 69e1b2f..0000000
--- a/backend/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-package-lock.json      binary
\ No newline at end of file
diff --git a/backend/.gitignore b/backend/.gitignore
index e0e208a..ba7be4e 100644
--- a/backend/.gitignore
+++ b/backend/.gitignore
@@ -27,9 +27,6 @@ buildNumber.properties
 .mvn/timing.properties
 !maven-wrapper.jar
 
-### npm ###
-/node_modules
-
 ### STS ###
 .apt_generated
 .classpath
diff --git a/backend/.license-header b/backend/.license-header
new file mode 100644
index 0000000..ef0d129
--- /dev/null
+++ b/backend/.license-header
@@ -0,0 +1,2 @@
+/* SPDX-License-Identifier: AGPL-3.0-or-later */
+
diff --git a/backend/package-lock.json b/backend/package-lock.json
deleted file mode 100644
index 5ace36e..0000000
--- a/backend/package-lock.json
+++ /dev/null
@@ -1,183 +0,0 @@
-{
-  "name": "backend-dummy",
-  "version": "1.0.0",
-  "lockfileVersion": 3,
-  "requires": true,
-  "packages": {
-    "": {
-      "name": "backend-dummy",
-      "version": "1.0.0",
-      "license": "AGPL-3.0-or-later",
-      "devDependencies": {
-        "@prettier/plugin-xml": "^3.4.1",
-        "prettier": "^3.3.2",
-        "prettier-plugin-java": "^2.6.0"
-      }
-    },
-    "node_modules/@chevrotain/cst-dts-gen": {
-      "version": "11.0.3",
-      "resolved": "https://registry.npmjs.org/@chevrotain/cst-dts-gen/-/cst-dts-gen-11.0.3.tgz",
-      "integrity": "sha512-BvIKpRLeS/8UbfxXxgC33xOumsacaeCKAjAeLyOn7Pcp95HiRbrpl14S+9vaZLolnbssPIUuiUd8IvgkRyt6NQ==",
-      "dev": true,
-      "dependencies": {
-        "@chevrotain/gast": "11.0.3",
-        "@chevrotain/types": "11.0.3",
-        "lodash-es": "4.17.21"
-      }
-    },
-    "node_modules/@chevrotain/gast": {
-      "version": "11.0.3",
-      "resolved": "https://registry.npmjs.org/@chevrotain/gast/-/gast-11.0.3.tgz",
-      "integrity": "sha512-+qNfcoNk70PyS/uxmj3li5NiECO+2YKZZQMbmjTqRI3Qchu8Hig/Q9vgkHpI3alNjr7M+a2St5pw5w5F6NL5/Q==",
-      "dev": true,
-      "dependencies": {
-        "@chevrotain/types": "11.0.3",
-        "lodash-es": "4.17.21"
-      }
-    },
-    "node_modules/@chevrotain/regexp-to-ast": {
-      "version": "11.0.3",
-      "resolved": "https://registry.npmjs.org/@chevrotain/regexp-to-ast/-/regexp-to-ast-11.0.3.tgz",
-      "integrity": "sha512-1fMHaBZxLFvWI067AVbGJav1eRY7N8DDvYCTwGBiE/ytKBgP8azTdgyrKyWZ9Mfh09eHWb5PgTSO8wi7U824RA==",
-      "dev": true
-    },
-    "node_modules/@chevrotain/types": {
-      "version": "11.0.3",
-      "resolved": "https://registry.npmjs.org/@chevrotain/types/-/types-11.0.3.tgz",
-      "integrity": "sha512-gsiM3G8b58kZC2HaWR50gu6Y1440cHiJ+i3JUvcp/35JchYejb2+5MVeJK0iKThYpAa/P2PYFV4hoi44HD+aHQ==",
-      "dev": true
-    },
-    "node_modules/@chevrotain/utils": {
-      "version": "11.0.3",
-      "resolved": "https://registry.npmjs.org/@chevrotain/utils/-/utils-11.0.3.tgz",
-      "integrity": "sha512-YslZMgtJUyuMbZ+aKvfF3x1f5liK4mWNxghFRv7jqRR9C3R3fAOGTTKvxXDa2Y1s9zSbcpuO0cAxDYsc9SrXoQ==",
-      "dev": true
-    },
-    "node_modules/@prettier/plugin-xml": {
-      "version": "3.4.1",
-      "resolved": "https://registry.npmjs.org/@prettier/plugin-xml/-/plugin-xml-3.4.1.tgz",
-      "integrity": "sha512-Uf/6/+9ez6z/IvZErgobZ2G9n1ybxF5BhCd7eMcKqfoWuOzzNUxBipNo3QAP8kRC1VD18TIo84no7LhqtyDcTg==",
-      "dev": true,
-      "dependencies": {
-        "@xml-tools/parser": "^1.0.11"
-      },
-      "peerDependencies": {
-        "prettier": "^3.0.0"
-      }
-    },
-    "node_modules/@xml-tools/parser": {
-      "version": "1.0.11",
-      "resolved": "https://registry.npmjs.org/@xml-tools/parser/-/parser-1.0.11.tgz",
-      "integrity": "sha512-aKqQ077XnR+oQtHJlrAflaZaL7qZsulWc/i/ZEooar5JiWj1eLt0+Wg28cpa+XLney107wXqneC+oG1IZvxkTA==",
-      "dev": true,
-      "dependencies": {
-        "chevrotain": "7.1.1"
-      }
-    },
-    "node_modules/@xml-tools/parser/node_modules/chevrotain": {
-      "version": "7.1.1",
-      "resolved": "https://registry.npmjs.org/chevrotain/-/chevrotain-7.1.1.tgz",
-      "integrity": "sha512-wy3mC1x4ye+O+QkEinVJkPf5u2vsrDIYW9G7ZuwFl6v/Yu0LwUuT2POsb+NUWApebyxfkQq6+yDfRExbnI5rcw==",
-      "dev": true,
-      "dependencies": {
-        "regexp-to-ast": "0.5.0"
-      }
-    },
-    "node_modules/chevrotain": {
-      "version": "11.0.3",
-      "resolved": "https://registry.npmjs.org/chevrotain/-/chevrotain-11.0.3.tgz",
-      "integrity": "sha512-ci2iJH6LeIkvP9eJW6gpueU8cnZhv85ELY8w8WiFtNjMHA5ad6pQLaJo9mEly/9qUyCpvqX8/POVUTf18/HFdw==",
-      "dev": true,
-      "dependencies": {
-        "@chevrotain/cst-dts-gen": "11.0.3",
-        "@chevrotain/gast": "11.0.3",
-        "@chevrotain/regexp-to-ast": "11.0.3",
-        "@chevrotain/types": "11.0.3",
-        "@chevrotain/utils": "11.0.3",
-        "lodash-es": "4.17.21"
-      }
-    },
-    "node_modules/chevrotain-allstar": {
-      "version": "0.3.1",
-      "resolved": "https://registry.npmjs.org/chevrotain-allstar/-/chevrotain-allstar-0.3.1.tgz",
-      "integrity": "sha512-b7g+y9A0v4mxCW1qUhf3BSVPg+/NvGErk/dOkrDaHA0nQIQGAtrOjlX//9OQtRlSCy+x9rfB5N8yC71lH1nvMw==",
-      "dev": true,
-      "dependencies": {
-        "lodash-es": "^4.17.21"
-      },
-      "peerDependencies": {
-        "chevrotain": "^11.0.0"
-      }
-    },
-    "node_modules/java-parser": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/java-parser/-/java-parser-2.3.0.tgz",
-      "integrity": "sha512-P6Ma4LU1w/e0Lr4SVM/0PtqCGoL2/i/KP9ZoiyLa824oBqhF0yGTgHDyZkLgp9GTzqR43wm5wabE56FF5X7cqg==",
-      "dev": true,
-      "dependencies": {
-        "chevrotain": "11.0.3",
-        "chevrotain-allstar": "0.3.1",
-        "lodash": "4.17.21"
-      }
-    },
-    "node_modules/lodash": {
-      "version": "4.17.21",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
-      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
-      "dev": true
-    },
-    "node_modules/lodash-es": {
-      "version": "4.17.21",
-      "resolved": "https://registry.npmjs.org/lodash-es/-/lodash-es-4.17.21.tgz",
-      "integrity": "sha512-mKnC+QJ9pWVzv+C4/U3rRsHapFfHvQFoFB92e52xeyGMcX6/OlIl78je1u8vePzYZSkkogMPJ2yjxxsb89cxyw==",
-      "dev": true
-    },
-    "node_modules/prettier": {
-      "version": "3.3.2",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.3.2.tgz",
-      "integrity": "sha512-rAVeHYMcv8ATV5d508CFdn+8/pHPpXeIid1DdrPwXnaAdH7cqjVbpJaT5eq4yRAFU/lsbwYwSF/n5iNrdJHPQA==",
-      "dev": true,
-      "bin": {
-        "prettier": "bin/prettier.cjs"
-      },
-      "engines": {
-        "node": ">=14"
-      },
-      "funding": {
-        "url": "https://github.com/prettier/prettier?sponsor=1"
-      }
-    },
-    "node_modules/prettier-plugin-java": {
-      "version": "2.6.0",
-      "resolved": "https://registry.npmjs.org/prettier-plugin-java/-/prettier-plugin-java-2.6.0.tgz",
-      "integrity": "sha512-mHZ3Ub3WAyYSUe1mMbiGH85xYV+NtzJgNsrfLNYDKvL7NfvoKBuJiEW4Xa2MFG668f9uRdj38WEuPKmRu+nv/g==",
-      "dev": true,
-      "dependencies": {
-        "java-parser": "2.3.0",
-        "lodash": "4.17.21",
-        "prettier": "3.2.5"
-      }
-    },
-    "node_modules/prettier-plugin-java/node_modules/prettier": {
-      "version": "3.2.5",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.2.5.tgz",
-      "integrity": "sha512-3/GWa9aOC0YeD7LUfvOG2NiDyhOWRvt1k+rcKhOuYnMY24iiCphgneUfJDyFXd6rZCAnuLBv6UeAULtrhT/F4A==",
-      "dev": true,
-      "bin": {
-        "prettier": "bin/prettier.cjs"
-      },
-      "engines": {
-        "node": ">=14"
-      },
-      "funding": {
-        "url": "https://github.com/prettier/prettier?sponsor=1"
-      }
-    },
-    "node_modules/regexp-to-ast": {
-      "version": "0.5.0",
-      "resolved": "https://registry.npmjs.org/regexp-to-ast/-/regexp-to-ast-0.5.0.tgz",
-      "integrity": "sha512-tlbJqcMHnPKI9zSrystikWKwHkBqu2a/Sgw01h3zFjvYrMxEDYHzzoMZnUrbIfpTFEsoRnnviOXNCzFiSc54Qw==",
-      "dev": true
-    }
-  }
-}
diff --git a/backend/package.json b/backend/package.json
deleted file mode 100644
index 0106471..0000000
--- a/backend/package.json
+++ /dev/null
@@ -1,16 +0,0 @@
-{
-  "name": "backend-dummy",
-  "version": "1.0.0",
-  "private": true,
-  "description": "Dummy package for using prettier",
-  "license": "AGPL-3.0-or-later",
-  "scripts": {
-    "prettier:check": "prettier --check 'src/**/*.java' '*.json' '*.xml'",
-    "prettier:fix": "prettier --write 'src/**/*.java' '*.json' '*.xml'"
-  },
-  "devDependencies": {
-    "@prettier/plugin-xml": "^3.4.1",
-    "prettier": "^3.3.2",
-    "prettier-plugin-java": "^2.6.0"
-  }
-}
diff --git a/backend/pom.xml b/backend/pom.xml
index d514462..614ef86 100644
--- a/backend/pom.xml
+++ b/backend/pom.xml
@@ -29,6 +29,9 @@
         <jpamodelgen.version>6.5.2.Final</jpamodelgen.version>
         <lombok.version>1.18.34</lombok.version>
         <mapstruct.version>1.5.5.Final</mapstruct.version>
+        <spotless.version>2.43.0</spotless.version>
+        <spotless.prettier.version>3.3.2</spotless.prettier.version>
+        <spotless.prettier-plugin-java.version>2.6.0</spotless.prettier-plugin-java.version>
         <spring.boot.version>3.3.1</spring.boot.version>
         <spring.security.version>6.3.1</spring.security.version>
         <springdoc-openapi-ui.version>2.5.0</springdoc-openapi-ui.version>
@@ -274,6 +277,30 @@
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <groupId>com.diffplug.spotless</groupId>
+                <artifactId>spotless-maven-plugin</artifactId>
+                <version>${spotless.version}</version>
+                <configuration>
+                    <java>
+                        <prettier>
+                            <devDependencies>
+                                <prettier>${spotless.prettier.version}</prettier>
+                                <prettier-plugin-java>${spotless.prettier-plugin-java.version}</prettier-plugin-java>
+                            </devDependencies>
+                            <config>
+                                <tabWidth>4</tabWidth>
+                                <printWidth>100</printWidth>
+                                <parser>java</parser>
+                                <plugins>prettier-plugin-java</plugins>
+                            </config>
+                        </prettier>
+                        <licenseHeader>
+                            <file>.license-header</file>
+                        </licenseHeader>
+                    </java>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
     <reporting>