diff --git a/biome.json b/biome.json
new file mode 100644
index 0000000..c06aa39
--- /dev/null
+++ b/biome.json
@@ -0,0 +1,32 @@
+{
+  "$schema": "https://biomejs.dev/schemas/1.8.3/schema.json",
+  "organizeImports": {
+    "enabled": true
+  },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "recommended": true,
+      "style": {
+        "noNonNullAssertion": "off"
+      },
+      "suspicious": {
+        "noExplicitAny": "off"
+      }
+    }
+  },
+  "formatter": {
+    "enabled": true,
+    "formatWithErrors": false,
+    "indentStyle": "space",
+    "indentWidth": 2,
+    "lineWidth": 100,
+    "quoteStyle": "single",
+    "semicolons": "always"
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "single"
+    }
+  }
+}
diff --git a/package.json b/package.json
index f4b6779..8b99ab9 100644
--- a/package.json
+++ b/package.json
@@ -4,10 +4,12 @@
   "description": "Telegram file uploader backend",
   "type": "module",
   "scripts": {
-    "dev": "bun --hot index.js",
-    "start": "NODE_ENV=production bun index.js",
+    "dev": "bun --hot src/index.ts",
+    "start": "NODE_ENV=production bun src/index.ts",
     "db:migrate": "psql $DATABASE_URL -f schema.sql",
-    "test": "bun test test/rateLimit.test.js && bun test test/file.test.js && bun test test/telegram.test.js && bun test test/upload.test.js && bun test test/files.test.js && bun test test/health.test.js && bun test test/bot.test.js && bun test test/bootstrap.test.js"
+    "test": "bun test test/rateLimit.test.ts && bun test test/file.test.ts && bun test test/telegram.test.ts && bun test test/upload.test.ts && bun test test/files.test.ts && bun test test/health.test.ts && bun test test/bot.test.ts && bun test test/bootstrap.test.ts",
+    "lint": "bunx biome check src test",
+    "format": "bunx biome format --write src test"
   },
   "dependencies": {
     "@prisma/engines": "^7.8.0",
@@ -19,6 +21,9 @@
     "winston": "^3.11.0"
   },
   "devDependencies": {
-    "drizzle-kit": "^0.31.10"
+    "@biomejs/biome": "^2.4.15",
+    "@types/node": "^25.8.0",
+    "drizzle-kit": "^0.31.10",
+    "typescript": "^6.0.3"
   }
 }
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..a0e6ad5
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,15 @@
+{
+  "compilerOptions": {
+    "lib": ["ESNext"],
+    "module": "ESNext",
+    "target": "ESNext",
+    "moduleResolution": "Bundler",
+    "moduleDetection": "force",
+    "strict": true,
+    "skipLibCheck": true,
+    "allowSyntheticDefaultImports": true,
+    "forceConsistentCasingInFileNames": true,
+    "types": ["bun-types"]
+  },
+  "include": ["src/**/*", "test/**/*"]
+}