diff --git a/.gitignore b/.gitignore
index d9e2efb..1e9062d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,3 @@
-node_modules/
-.cache/
-dist/
+**/node_modules/
+**/.cache/
+**/dist/
diff --git a/backend/package.json b/backend/package.json
new file mode 100644
index 0000000..29242a3
--- /dev/null
+++ b/backend/package.json
@@ -0,0 +1,29 @@
+{
+    "name": "lateinicusserver",
+    "version": "0.1.0",
+    "description": "The backend server for Lateinicus",
+    "main": "index.js",
+    "scripts": {
+        "test": "echo \"Error: no test specified\" && exit 1",
+        "start": "node dist/main.js",
+        "build": "tsc -p tsconfig.json"
+    },
+    "repository": {
+        "type": "git",
+        "url": "git+https://gitlab.com/Polynomdivision/lateinicusserver.git"
+    },
+    "author": "",
+    "license": "MIT",
+    "bugs": {
+        "url": "https://gitlab.com/Polynomdivision/lateinicusserver/issues"
+    },
+    "homepage": "https://gitlab.com/Polynomdivision/lateinicusserver#readme",
+    "dependencies": {
+        "express": "4.16.3",
+        "body-parser": "1.18.3"
+    },
+    "devDependencies": {
+        "@types/express": "4.16.0",
+        "typescript": "3.0.3"
+    }
+}
diff --git a/backend/src/main.ts b/backend/src/main.ts
new file mode 100644
index 0000000..8495932
--- /dev/null
+++ b/backend/src/main.ts
@@ -0,0 +1,150 @@
+import * as express from "express";
+
+import * as bodyparser from "body-parser";
+
+import { isAuthenticated, performLogin } from "./security/auth";
+
+const baseRouter = express.Router();
+const authRouter = express.Router();
+
+authRouter.use(bodyparser.json());
+authRouter.use(async (req, res, next) => {
+    if ("token" in req.body || req.get("token")) {
+        const token = req.body.token || req.get("token");
+
+        // Check if were authenticated
+        const auth = await isAuthenticated(token);
+        if (auth)
+            next();
+        else
+            res.send({
+                error: "401",
+                data: {},
+            });
+    } else {
+        res.send({
+            error: "401",
+            data: {},
+        });
+    }
+});
+authRouter.get("/class/:id/topTen", async (req, res) => {
+    if (!req.params) {
+        res.send({
+            error: "400",
+            data: {
+                msg: "No class specified",
+            },
+        });
+        return;
+    }
+
+    console.log("Stub: /auth/class/:id/topTen");
+    // TODO: Implement
+    res.send({
+        error: "0",
+        data: {
+            topTen: [{
+                username: "User1",
+                level: 5,
+                score: 200,
+            }, {
+                username: "User2",
+                level: 4,
+                score: 100,
+            }],
+        }
+    });
+});
+authRouter.get("/level/:id/vocab", async (req, res) => {
+    if (!req.params) {
+        res.send({
+            error: "400",
+            data: {
+                msg: "No level specified",
+            },
+        });
+        return;
+    }
+
+    console.log("Stub: /auth/level/:id/vocab");
+    // TODO: Implement
+    res.send({
+        error: "0",
+        data: {
+            vocab: [{
+                german: ["Wein"],
+                hint: "Worte auf '-um' sind meistens NeutrUM",
+                type: 0,
+                latin: {
+                    grundform: "Vinum",
+                    genitiv: "Vini",
+                    genus: "Neutrum"
+                },
+                id: 0
+            }],
+        }
+    });
+});
+
+const app = express();
+app.use(bodyparser.json());
+
+app.use((req, res, next) => {
+    // TODO: Change this to our domain
+    res.append("Access-Control-Allow-Origin", "*");
+    res.append("Access-Control-Allow-Headers", "Content-Type,Token");
+
+    if (res.method === "OPTIONS") {
+        // TODO: Send 200
+        res.end();
+    } else {
+        next();
+    }
+});
+app.use("/auth", authRouter);
+app.get("/health", (req, res) => {
+    res.send({
+        error: "0",
+        data: {
+            msg: "lol",
+        },
+    });
+});
+app.post("/login", async (req, res) => {
+    const { body } = req;
+
+    console.log("Stub: /login");
+
+    // Check if all arguments were sent
+    if (!body || !body.hasOwnProperty("username") || !body.hasOwnProperty("hash")) {
+        res.send({
+            error: "400",
+            data: {
+                msg: "Username or password not specified",
+            },
+        });
+
+        return;
+    }
+
+    // Try to log the user in
+    const userData = await performLogin(body.username, body.hash)
+        .catch((err) => {
+            // If anything was wrong, just tell the client
+            res.send({
+                error: "1",
+                data: {
+                    msg: "Username or password is wrong",
+                },
+            });
+        });
+
+    res.send({
+        error: "0",
+        data: userData,
+    });
+});
+app.listen(8080, () => {
+    console.log("Starting on port 8080");
+});
diff --git a/backend/src/security/auth.ts b/backend/src/security/auth.ts
new file mode 100644
index 0000000..8d4a57f
--- /dev/null
+++ b/backend/src/security/auth.ts
@@ -0,0 +1,27 @@
+import { pbkdf2Sync } from "crypto";
+
+export function isAuthenticated(token: string): Promise<boolean> {
+    return new Promise((res, rej) => {
+        // TODO
+        res(true);
+    });
+}
+
+export function performLogin(username: string, password: string): Promise<any | {}> {
+    return new Promise((res, rej) => {
+        // Hash the password
+        // TODO: Fetch the salt
+        const salt = "";
+        const hash = pbkdf2Sync(password, salt, 50000, 512, "sha512").toString("hex");
+
+        // TODO: Look up the user, compare hashes and send the returned user
+        res({
+            username: "Polynom",
+            uid: "1",
+            showWelcome: false,
+            classId: "test",
+
+            sessionToken: "abc123",
+        });
+    });
+};
diff --git a/backend/tsconfig.json b/backend/tsconfig.json
new file mode 100644
index 0000000..ea7264c
--- /dev/null
+++ b/backend/tsconfig.json
@@ -0,0 +1,13 @@
+{
+    "compilerOptions": {
+        "target": "ESnext",
+        "module": "CommonJS",
+        "noImplicitAny": true,
+        "removeComments": true,
+        "sourceMap": true,
+
+        "outDir": "./dist/",
+        
+        "baseUrl": "./src/"
+    }
+}
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