diff --git a/.gitignore b/.gitignore
index b6b402ed9..fe5cc92eb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@ yarn-error.log
 *.bkp
 
 week3/prep-exercise/server-demo/
+.env
\ No newline at end of file
diff --git a/assignments/config-files/hackyourtemperature/__tests__/app.test.js b/assignments/config-files/hackyourtemperature/__tests__/app.test.js
new file mode 100644
index 000000000..6be6bddbb
--- /dev/null
+++ b/assignments/config-files/hackyourtemperature/__tests__/app.test.js
@@ -0,0 +1,25 @@
+import app from "../app.js";
+import supertest from "supertest";
+
+const request = supertest(app);
+
+describe("POST /", () => {
+  it('should return 400 if no cityName provided', async() => {
+    const response = await request.post('/weather').send({});
+    expect(response.status).toBe(400);
+    expect(response.body).toEqual({ message: 'You have to provide a city name!' });
+  });
+
+  it('should return 404 if the cityName is not present in the data', async() => {
+    const response = await request.post('/weather').send({ cityName: 'ashjsdks'});
+    expect(response.status).toBe(404);
+    expect(response.body).toEqual({ weatherText: 'City is not found!' });
+  });
+
+  it('should return 200 if the cityName is found', async() => {
+    const response = await request.post('/weather').send({ cityName: 'Amsterdam' });
+    expect(response.status).toBe(200);
+    expect(response.body.weatherText).toContain('Amsterdam');
+  });
+});
+
diff --git a/assignments/config-files/hackyourtemperature/app.js b/assignments/config-files/hackyourtemperature/app.js
new file mode 100644
index 000000000..7288abd29
--- /dev/null
+++ b/assignments/config-files/hackyourtemperature/app.js
@@ -0,0 +1,39 @@
+import express from 'express';
+import fetch from 'node-fetch';
+import { API_KEY } from './sources/keys.js';
+
+const app = express();
+
+app.use(express.json());
+
+app.get('/', (req, res) => {
+  res.send('hello from backend to frontend!');
+});
+
+app.post('/weather', async (req, res) => {
+  let { cityName } = req.body;
+
+  if (!cityName) {
+    return res.status(400).json({ message: 'You have to provide a city name!'});
+  }
+
+  try {
+    const response = await fetch(
+      `https://api.openweathermap.org/data/2.5/weather?q=${cityName}&appid=${API_KEY}&units=metric`
+    );
+
+    if (!response.ok) {
+      return res.status(404).json({ weatherText: 'City is not found!' });
+    }
+
+    const data = await response.json();
+    const weather = data.main.temp;
+
+    res.status(200).json({ weatherText: `The weather is ${weather}°C in ${cityName}` });
+  } catch (error) {
+    console.error('Error fetching data!');
+    res.status(500).json({ message: 'Something went wrong...' })
+  }
+});
+
+export default app;
\ No newline at end of file
diff --git a/assignments/config-files/babel.config.cjs b/assignments/config-files/hackyourtemperature/babel.config.cjs
similarity index 100%
rename from assignments/config-files/babel.config.cjs
rename to assignments/config-files/hackyourtemperature/babel.config.cjs
diff --git a/assignments/config-files/jest.config.js b/assignments/config-files/hackyourtemperature/jest.config.cjs
similarity index 94%
rename from assignments/config-files/jest.config.js
rename to assignments/config-files/hackyourtemperature/jest.config.cjs
index 19ba9649e..26f9da62e 100644
--- a/assignments/config-files/jest.config.js
+++ b/assignments/config-files/hackyourtemperature/jest.config.cjs
@@ -1,4 +1,4 @@
-export default {
+module.exports = {
   // Tells jest that any file that has 2 .'s in it and ends with either js or jsx should be run through the babel-jest transformer
   transform: {
     "^.+\\.jsx?$": "babel-jest",
diff --git a/assignments/config-files/hackyourtemperature/package.json b/assignments/config-files/hackyourtemperature/package.json
new file mode 100644
index 000000000..87d5e7790
--- /dev/null
+++ b/assignments/config-files/hackyourtemperature/package.json
@@ -0,0 +1,27 @@
+{
+  "name": "hackyourtemperature",
+  "version": "1.0.0",
+  "type": "module",
+  "main": "server.js",
+  "scripts": {
+    "test": "jest",
+    "start": "nodemon server.js"
+  },
+  "keywords": [],
+  "author": "Sertan Erdogan",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "dotenv": "^16.4.7",
+    "express": "^4.21.2",
+    "express-handlebars": "^8.0.1",
+    "node-fetch": "^3.3.2"
+  },
+  "devDependencies": {
+    "@babel/preset-env": "^7.26.9",
+    "babel-jest": "^29.7.0",
+    "jest": "^29.7.0",
+    "nodemon": "^3.1.9",
+    "supertest": "^7.0.0"
+  }
+}
diff --git a/assignments/config-files/hackyourtemperature/server.js b/assignments/config-files/hackyourtemperature/server.js
new file mode 100644
index 000000000..b39a23ebf
--- /dev/null
+++ b/assignments/config-files/hackyourtemperature/server.js
@@ -0,0 +1,6 @@
+import app from './app.js';
+const PORT = 3000;
+
+app.listen(PORT, () => {
+  console.log(`Server is running on port ${PORT}`);
+});
\ No newline at end of file
diff --git a/assignments/config-files/hackyourtemperature/sources/keys.js b/assignments/config-files/hackyourtemperature/sources/keys.js
new file mode 100644
index 000000000..9c92d38a7
--- /dev/null
+++ b/assignments/config-files/hackyourtemperature/sources/keys.js
@@ -0,0 +1,4 @@
+import dotenv from 'dotenv';
+dotenv.config();
+
+export const API_KEY = process.env.API_KEY;
\ No newline at end of file