diff --git a/.circleci/config.yml b/.circleci/config.yml
index f09424b..f90117b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -44,20 +44,6 @@ jobs:
 
         steps:
             - checkout
-
-            - restore_cache:
-                  keys:
-                      - backend-dependencies-{{ checksum "package.json" }}
-
-            - run:
-                  name: install backend deps
-                  command: npm i
-
-            - save_cache:
-                  paths:
-                      - node_modules
-                  key: backend-dependencies-{{ checksum "package.json" }}
-
             - restore_cache:
                   keys:
                       - frontend-dependencies-{{ checksum "frontend/package.json" }}
@@ -87,19 +73,6 @@ jobs:
         steps:
             - checkout:
 
-            - restore_cache:
-                  keys:
-                      - backend-dependencies-{{ checksum "package.json" }}
-
-            - run:
-                  name: install backend deps
-                  command: npm i
-
-            - save_cache:
-                  paths:
-                      - node_modules
-                  key: backend-dependencies-{{ checksum "package.json" }}
-
             - restore_cache:
                   keys:
                       - frontend-dependencies-{{ checksum "package.json" }}
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 4c59196..b0ebec0 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -13,6 +13,7 @@
                 "@typescript-eslint/eslint-plugin": "^5.48.1",
                 "@typescript-eslint/parser": "^5.48.1",
                 "@wojtekmaj/enzyme-adapter-react-17": "^0",
+                "class-validator": "^0.14.0",
                 "enzyme": "^3.11.0",
                 "eslint": "^8.31.0",
                 "eslint-config-prettier": "^8.6.0",
@@ -2833,6 +2834,11 @@
             "resolved": "https://registry.npmjs.org/@types/use-sync-external-store/-/use-sync-external-store-0.0.3.tgz",
             "integrity": "sha512-EwmlvuaxPNej9+T4v5AuBPJa2x2UOJVdjCtDHgcDqitUeOtjnJKJ+apYjVcAoBEMjKW1VVFGZLUb5+qqa09XFA=="
         },
+        "node_modules/@types/validator": {
+            "version": "13.7.10",
+            "resolved": "https://registry.npmjs.org/@types/validator/-/validator-13.7.10.tgz",
+            "integrity": "sha512-t1yxFAR2n0+VO6hd/FJ9F2uezAZVWHLmpmlJzm1eX03+H7+HsuTAp7L8QJs+2pQCfWkP1+EXsGK9Z9v7o/qPVQ=="
+        },
         "node_modules/@types/yargs": {
             "version": "17.0.19",
             "resolved": "https://registry.npmjs.org/@types/yargs/-/yargs-17.0.19.tgz",
@@ -3811,6 +3817,16 @@
             "resolved": "https://registry.npmjs.org/cjs-module-lexer/-/cjs-module-lexer-1.2.2.tgz",
             "integrity": "sha512-cOU9usZw8/dXIXKtwa8pM0OTJQuJkxMN6w30csNRUerHfeQ5R6U3kkU/FtJeIf3M202OHfY2U8ccInBG7/xogA=="
         },
+        "node_modules/class-validator": {
+            "version": "0.14.0",
+            "resolved": "https://registry.npmjs.org/class-validator/-/class-validator-0.14.0.tgz",
+            "integrity": "sha512-ct3ltplN8I9fOwUd8GrP8UQixwff129BkEtuWDKL5W45cQuLd19xqmTLu5ge78YDm/fdje6FMt0hGOhl0lii3A==",
+            "dependencies": {
+                "@types/validator": "^13.7.10",
+                "libphonenumber-js": "^1.10.14",
+                "validator": "^13.7.0"
+            }
+        },
         "node_modules/classnames": {
             "version": "2.3.2",
             "resolved": "https://registry.npmjs.org/classnames/-/classnames-2.3.2.tgz",
@@ -7057,6 +7073,11 @@
                 "node": ">= 0.8.0"
             }
         },
+        "node_modules/libphonenumber-js": {
+            "version": "1.10.18",
+            "resolved": "https://registry.npmjs.org/libphonenumber-js/-/libphonenumber-js-1.10.18.tgz",
+            "integrity": "sha512-NS4ZEgNhwbcPz1gfSXCGFnQm0xEiyTSPRthIuWytDzOiEG9xnZ2FbLyfJC4tI2BMAAXpoWbNxHYH75pa3Dq9og=="
+        },
         "node_modules/lightningcss": {
             "version": "1.18.0",
             "resolved": "https://registry.npmjs.org/lightningcss/-/lightningcss-1.18.0.tgz",
@@ -9971,6 +9992,14 @@
             "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.9.0.tgz",
             "integrity": "sha512-ASFBup0Mz1uyiIjANan1jzLQami9z1PoYSZCiiYW2FczPbenXc45FZdBZLzOT+r6+iciuEModtmCti+hjaAk0A=="
         },
+        "node_modules/validator": {
+            "version": "13.7.0",
+            "resolved": "https://registry.npmjs.org/validator/-/validator-13.7.0.tgz",
+            "integrity": "sha512-nYXQLCBkpJ8X6ltALua9dRrZDHVYxjJ1wgskNt1lH9fzGjs3tgojGSCBjmEPwkWS1y29+DrizMTW19Pr9uB2nw==",
+            "engines": {
+                "node": ">= 0.10"
+            }
+        },
         "node_modules/value-equal": {
             "version": "1.0.1",
             "resolved": "https://registry.npmjs.org/value-equal/-/value-equal-1.0.1.tgz",
@@ -12294,6 +12323,11 @@
             "resolved": "https://registry.npmjs.org/@types/use-sync-external-store/-/use-sync-external-store-0.0.3.tgz",
             "integrity": "sha512-EwmlvuaxPNej9+T4v5AuBPJa2x2UOJVdjCtDHgcDqitUeOtjnJKJ+apYjVcAoBEMjKW1VVFGZLUb5+qqa09XFA=="
         },
+        "@types/validator": {
+            "version": "13.7.10",
+            "resolved": "https://registry.npmjs.org/@types/validator/-/validator-13.7.10.tgz",
+            "integrity": "sha512-t1yxFAR2n0+VO6hd/FJ9F2uezAZVWHLmpmlJzm1eX03+H7+HsuTAp7L8QJs+2pQCfWkP1+EXsGK9Z9v7o/qPVQ=="
+        },
         "@types/yargs": {
             "version": "17.0.19",
             "resolved": "https://registry.npmjs.org/@types/yargs/-/yargs-17.0.19.tgz",
@@ -12965,6 +12999,16 @@
             "resolved": "https://registry.npmjs.org/cjs-module-lexer/-/cjs-module-lexer-1.2.2.tgz",
             "integrity": "sha512-cOU9usZw8/dXIXKtwa8pM0OTJQuJkxMN6w30csNRUerHfeQ5R6U3kkU/FtJeIf3M202OHfY2U8ccInBG7/xogA=="
         },
+        "class-validator": {
+            "version": "0.14.0",
+            "resolved": "https://registry.npmjs.org/class-validator/-/class-validator-0.14.0.tgz",
+            "integrity": "sha512-ct3ltplN8I9fOwUd8GrP8UQixwff129BkEtuWDKL5W45cQuLd19xqmTLu5ge78YDm/fdje6FMt0hGOhl0lii3A==",
+            "requires": {
+                "@types/validator": "^13.7.10",
+                "libphonenumber-js": "^1.10.14",
+                "validator": "^13.7.0"
+            }
+        },
         "classnames": {
             "version": "2.3.2",
             "resolved": "https://registry.npmjs.org/classnames/-/classnames-2.3.2.tgz",
@@ -15319,6 +15363,11 @@
                 "type-check": "~0.4.0"
             }
         },
+        "libphonenumber-js": {
+            "version": "1.10.18",
+            "resolved": "https://registry.npmjs.org/libphonenumber-js/-/libphonenumber-js-1.10.18.tgz",
+            "integrity": "sha512-NS4ZEgNhwbcPz1gfSXCGFnQm0xEiyTSPRthIuWytDzOiEG9xnZ2FbLyfJC4tI2BMAAXpoWbNxHYH75pa3Dq9og=="
+        },
         "lightningcss": {
             "version": "1.18.0",
             "resolved": "https://registry.npmjs.org/lightningcss/-/lightningcss-1.18.0.tgz",
@@ -17406,6 +17455,11 @@
                 }
             }
         },
+        "validator": {
+            "version": "13.7.0",
+            "resolved": "https://registry.npmjs.org/validator/-/validator-13.7.0.tgz",
+            "integrity": "sha512-nYXQLCBkpJ8X6ltALua9dRrZDHVYxjJ1wgskNt1lH9fzGjs3tgojGSCBjmEPwkWS1y29+DrizMTW19Pr9uB2nw=="
+        },
         "value-equal": {
             "version": "1.0.1",
             "resolved": "https://registry.npmjs.org/value-equal/-/value-equal-1.0.1.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index fe15068..9768b69 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -15,6 +15,7 @@
         "@typescript-eslint/eslint-plugin": "^5.48.1",
         "@typescript-eslint/parser": "^5.48.1",
         "@wojtekmaj/enzyme-adapter-react-17": "^0",
+        "class-validator": "^0.14.0",
         "enzyme": "^3.11.0",
         "eslint": "^8.31.0",
         "eslint-config-prettier": "^8.6.0",