diff --git a/backend/biome.json b/backend/biome.json
new file mode 100644
index 000000000..cd6a1bb59
--- /dev/null
+++ b/backend/biome.json
@@ -0,0 +1,147 @@
+{
+	"$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
+	"vcs": { "enabled": false, "clientKind": "git", "useIgnoreFile": false },
+	"files": {
+		"ignoreUnknown": false,
+		"ignore": ["build", "node_modules", "coverage"],
+		"include": ["./src/**/*.js", "./src/**/*.ts"]
+	},
+	"formatter": {
+		"enabled": true,
+		"useEditorconfig": true,
+		"formatWithErrors": false,
+		"indentStyle": "space",
+		"indentWidth": 2,
+		"lineEnding": "lf",
+		"lineWidth": 100,
+		"attributePosition": "auto",
+		"bracketSpacing": true
+	},
+	"organizeImports": { "enabled": true },
+	"linter": {
+		"enabled": true,
+		"rules": {
+			"recommended": false,
+			"complexity": {
+				"noExtraBooleanCast": "error",
+				"noMultipleSpacesInRegularExpressionLiterals": "error",
+				"noUselessCatch": "error",
+				"noUselessConstructor": "error",
+				"noUselessLoneBlockStatements": "error",
+				"noUselessRename": "error",
+				"noUselessTernary": "error",
+				"noUselessUndefinedInitialization": "error",
+				"noVoid": "error",
+				"noWith": "error",
+				"useLiteralKeys": "error",
+				"useRegexLiterals": "error"
+			},
+			"correctness": {
+				"noConstAssign": "error",
+				"noConstantCondition": "error",
+				"noEmptyCharacterClassInRegex": "error",
+				"noEmptyPattern": "error",
+				"noGlobalObjectCalls": "error",
+				"noInnerDeclarations": "error",
+				"noInvalidConstructorSuper": "error",
+				"noInvalidUseBeforeDeclaration": "error",
+				"noNewSymbol": "error",
+				"noNodejsModules": "off",
+				"noNonoctalDecimalEscape": "error",
+				"noPrecisionLoss": "error",
+				"noSelfAssign": "error",
+				"noSetterReturn": "error",
+				"noSwitchDeclarations": "error",
+				"noUndeclaredVariables": "error",
+				"noUnreachable": "error",
+				"noUnreachableSuper": "error",
+				"noUnsafeFinally": "error",
+				"noUnsafeOptionalChaining": "error",
+				"noUnusedLabels": "error",
+				"noUnusedVariables": "error",
+				"useArrayLiterals": "error",
+				"useIsNan": "error",
+				"useValidForDirection": "error",
+				"useYield": "error"
+			},
+			"security": { "noGlobalEval": "error" },
+			"style": {
+				"noCommaOperator": "error",
+				"noDefaultExport": "error",
+				"noVar": "warn",
+				"noYodaExpression": "error",
+				"useBlockStatements": "error",
+				"useConsistentBuiltinInstantiation": "error",
+				"useConst": "error",
+				"useSingleVarDeclarator": "error"
+			},
+			"suspicious": {
+				"noAsyncPromiseExecutor": "error",
+				"noCatchAssign": "error",
+				"noClassAssign": "error",
+				"noCompareNegZero": "error",
+				"noConsole": "error",
+				"noControlCharactersInRegex": "error",
+				"noDebugger": "error",
+				"noDoubleEquals": "error",
+				"noDuplicateCase": "error",
+				"noDuplicateClassMembers": "error",
+				"noDuplicateObjectKeys": "error",
+				"noDuplicateParameters": "error",
+				"noEmptyBlockStatements": "error",
+				"noFallthroughSwitchClause": "error",
+				"noFunctionAssign": "error",
+				"noGlobalAssign": "error",
+				"noImportAssign": "error",
+				"noMisleadingCharacterClass": "error",
+				"noPrototypeBuiltins": "error",
+				"noRedeclare": "error",
+				"noSelfCompare": "error",
+				"noShadowRestrictedNames": "error",
+				"noSparseArray": "error",
+				"noUnsafeNegation": "error",
+				"useDefaultSwitchClauseLast": "error",
+				"useGetterReturn": "error",
+				"useValidTypeof": "error"
+			}
+		},
+		"ignore": ["**/node_modules", "**/*.min.js", "**/build", "**/coverage"]
+	},
+	"javascript": {
+		"formatter": {
+			"jsxQuoteStyle": "single",
+			"quoteProperties": "asNeeded",
+			"trailingCommas": "all",
+			"semicolons": "asNeeded",
+			"arrowParentheses": "always",
+			"bracketSameLine": false,
+			"quoteStyle": "single",
+			"attributePosition": "auto",
+			"bracketSpacing": true
+		},
+		"globals": [
+      "document",
+      "navigator",
+      "window",
+      "describe",
+      "test",
+      "it",
+      "expect",
+			"beforeAll",
+			"beforeEach",
+			"afterAll",
+			"afterEach",
+			"jest"
+		],
+		"parser": {
+			"unsafeParameterDecoratorsEnabled": true
+		}
+	},
+	"overrides": [
+		{
+			"include": ["*.ts", "*.tsx"],
+			"linter": { "rules": { "complexity": { "noVoid": "error" } } }
+		},
+		{ "include": ["*.test.ts"], "linter": { "rules": {} } }
+	]
+}
diff --git a/backend/package.json b/backend/package.json
index 880d48a53..dc81c1c32 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -58,6 +58,7 @@
     "xregexp": "^5.1.1"
   },
   "devDependencies": {
+    "@biomejs/biome": "1.9.4",
     "@eslint-community/eslint-plugin-eslint-comments": "^3.2.1",
     "@types/email-templates": "^10.0.1",
     "@types/express": "^4.17.12",
diff --git a/backend/yarn.lock b/backend/yarn.lock
index f7a2a27b1..2a897aa27 100644
--- a/backend/yarn.lock
+++ b/backend/yarn.lock
@@ -318,6 +318,60 @@
   resolved "https://registry.yarnpkg.com/@bcoe/v8-coverage/-/v8-coverage-0.2.3.tgz#75a2e8b51cb758a7553d6804a5932d7aace75c39"
   integrity sha512-0hYQ8SB4Db5zvZB4axdMHGwEaQjkZzFjQiN9LVYvIFB2nSUHW9tYpxWriPrWDASIxiaXax83REcLxuSdnGPZtw==
 
+"@biomejs/biome@1.9.4":
+  version "1.9.4"
+  resolved "https://registry.yarnpkg.com/@biomejs/biome/-/biome-1.9.4.tgz#89766281cbc3a0aae865a7ff13d6aaffea2842bf"
+  integrity sha512-1rkd7G70+o9KkTn5KLmDYXihGoTaIGO9PIIN2ZB7UJxFrWw04CZHPYiMRjYsaDvVV7hP1dYNRLxSANLaBFGpog==
+  optionalDependencies:
+    "@biomejs/cli-darwin-arm64" "1.9.4"
+    "@biomejs/cli-darwin-x64" "1.9.4"
+    "@biomejs/cli-linux-arm64" "1.9.4"
+    "@biomejs/cli-linux-arm64-musl" "1.9.4"
+    "@biomejs/cli-linux-x64" "1.9.4"
+    "@biomejs/cli-linux-x64-musl" "1.9.4"
+    "@biomejs/cli-win32-arm64" "1.9.4"
+    "@biomejs/cli-win32-x64" "1.9.4"
+
+"@biomejs/cli-darwin-arm64@1.9.4":
+  version "1.9.4"
+  resolved "https://registry.yarnpkg.com/@biomejs/cli-darwin-arm64/-/cli-darwin-arm64-1.9.4.tgz#dfa376d23a54a2d8f17133c92f23c1bf2e62509f"
+  integrity sha512-bFBsPWrNvkdKrNCYeAp+xo2HecOGPAy9WyNyB/jKnnedgzl4W4Hb9ZMzYNbf8dMCGmUdSavlYHiR01QaYR58cw==
+
+"@biomejs/cli-darwin-x64@1.9.4":
+  version "1.9.4"
+  resolved "https://registry.yarnpkg.com/@biomejs/cli-darwin-x64/-/cli-darwin-x64-1.9.4.tgz#eafc2ce3849d385fc02238aad1ca4a73395a64d9"
+  integrity sha512-ngYBh/+bEedqkSevPVhLP4QfVPCpb+4BBe2p7Xs32dBgs7rh9nY2AIYUL6BgLw1JVXV8GlpKmb/hNiuIxfPfZg==
+
+"@biomejs/cli-linux-arm64-musl@1.9.4":
+  version "1.9.4"
+  resolved "https://registry.yarnpkg.com/@biomejs/cli-linux-arm64-musl/-/cli-linux-arm64-musl-1.9.4.tgz#d780c3e01758fc90f3268357e3f19163d1f84fca"
+  integrity sha512-v665Ct9WCRjGa8+kTr0CzApU0+XXtRgwmzIf1SeKSGAv+2scAlW6JR5PMFo6FzqqZ64Po79cKODKf3/AAmECqA==
+
+"@biomejs/cli-linux-arm64@1.9.4":
+  version "1.9.4"
+  resolved "https://registry.yarnpkg.com/@biomejs/cli-linux-arm64/-/cli-linux-arm64-1.9.4.tgz#8ed1dd0e89419a4b66a47f95aefb8c46ae6041c9"
+  integrity sha512-fJIW0+LYujdjUgJJuwesP4EjIBl/N/TcOX3IvIHJQNsAqvV2CHIogsmA94BPG6jZATS4Hi+xv4SkBBQSt1N4/g==
+
+"@biomejs/cli-linux-x64-musl@1.9.4":
+  version "1.9.4"
+  resolved "https://registry.yarnpkg.com/@biomejs/cli-linux-x64-musl/-/cli-linux-x64-musl-1.9.4.tgz#f36982b966bd671a36671e1de4417963d7db15fb"
+  integrity sha512-gEhi/jSBhZ2m6wjV530Yy8+fNqG8PAinM3oV7CyO+6c3CEh16Eizm21uHVsyVBEB6RIM8JHIl6AGYCv6Q6Q9Tg==
+
+"@biomejs/cli-linux-x64@1.9.4":
+  version "1.9.4"
+  resolved "https://registry.yarnpkg.com/@biomejs/cli-linux-x64/-/cli-linux-x64-1.9.4.tgz#a0a7f56680c76b8034ddc149dbf398bdd3a462e8"
+  integrity sha512-lRCJv/Vi3Vlwmbd6K+oQ0KhLHMAysN8lXoCI7XeHlxaajk06u7G+UsFSO01NAs5iYuWKmVZjmiOzJ0OJmGsMwg==
+
+"@biomejs/cli-win32-arm64@1.9.4":
+  version "1.9.4"
+  resolved "https://registry.yarnpkg.com/@biomejs/cli-win32-arm64/-/cli-win32-arm64-1.9.4.tgz#e2ef4e0084e76b7e26f0fc887c5ef1265ea56200"
+  integrity sha512-tlbhLk+WXZmgwoIKwHIHEBZUwxml7bRJgk0X2sPyNR3S93cdRq6XulAZRQJ17FYGGzWne0fgrXBKpl7l4M87Hg==
+
+"@biomejs/cli-win32-x64@1.9.4":
+  version "1.9.4"
+  resolved "https://registry.yarnpkg.com/@biomejs/cli-win32-x64/-/cli-win32-x64-1.9.4.tgz#4c7afa90e3970213599b4095e62f87e5972b2340"
+  integrity sha512-8Y5wMhVIPaWe6jw2H+KlEm4wP/f7EW3810ZLmDlrEEy5KvBsb9ECEfu/kMWD484ijfQ8+nIi0giMgu9g1UAuuA==
+
 "@cspotcode/source-map-support@^0.8.0":
   version "0.8.1"
   resolved "https://registry.yarnpkg.com/@cspotcode/source-map-support/-/source-map-support-0.8.1.tgz#00629c35a688e05a88b1cda684fb9d5e73f000a1"