diff --git a/backend/.env b/backend/.env
new file mode 100644
index 0000000..082cb8f
--- /dev/null
+++ b/backend/.env
@@ -0,0 +1,13 @@
+PORT=5000
+
+MONGO_URI=mongodb://localhost:27017/sistema_combustible
+
+JWT_SECRET=super_secret_key
+
+SQL_SERVER=ABIGAILV\SQLEXPRESS
+
+SQL_DATABASE=empresa_pan
+
+SQL_USER=sa
+
+SQL_PASSWORD=123456
\ No newline at end of file
diff --git a/backend/package.json b/backend/package.json
index 1138bfc..d6683ce 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -4,6 +4,7 @@
   "description": "",
   "main": "index.js",
   "scripts": {
+    "dev": "ts-node-dev --respawn src/server.ts",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "keywords": [],
diff --git a/backend/src/app.ts b/backend/src/app.ts
index e69de29..997bec9 100644
--- a/backend/src/app.ts
+++ b/backend/src/app.ts
@@ -0,0 +1,35 @@
+import express from "express";
+import cors from "cors";
+import roleRoutes from "./modules/roles/role.routes";
+import userRoutes from "./modules/user/user.routes";
+
+
+const app = express();
+app.use(cors());
+
+app.use(express.json());
+
+app.use("/api/roles", roleRoutes);
+app.use("/api/users", userRoutes)
+
+
+app.use(express.urlencoded({
+    extended:true
+})
+);
+
+app.get(
+    "/api/health",
+    (   
+        req,
+        res   
+    ) => {
+        
+        res.status(200).json({
+            success:true,
+            message: "API funcionando correctamente"
+        });
+    }
+);
+
+export default app;
\ No newline at end of file
diff --git a/backend/src/config/mongodb.ts b/backend/src/config/mongodb.ts
new file mode 100644
index 0000000..0eab675
--- /dev/null
+++ b/backend/src/config/mongodb.ts
@@ -0,0 +1,18 @@
+import mongoose from "mongoose";
+
+export const connectMongo = async (): Promise <void> => {
+
+    try {
+
+        await mongoose.connect(process.env.MONGO_URI!);
+        console.log("MongoDB conectado");
+
+    } catch(error){
+
+        console.error("Error MongoDB", error);
+
+        process.exit(1);
+
+    }
+
+};
\ No newline at end of file
diff --git a/backend/src/config/sqlserver.ts b/backend/src/config/sqlserver.ts
new file mode 100644
index 0000000..5e330b5
--- /dev/null
+++ b/backend/src/config/sqlserver.ts
@@ -0,0 +1,30 @@
+/*import sql from "mssql";
+
+
+const sqlConfig:sql.config = {
+    
+    user: process.env.SQL_USER,
+    password: process.env.SQL_PASSWORD,
+    server:process.env.SQL_SERVER!,
+    database:process.env.SQL_DATABASE,
+
+    options:{
+            trustServerCertificate:true,
+            encrypt:false
+    }
+};
+
+
+export const connectSqlServer = async() => {
+
+    try{
+        await sql.connect(sqlConfig);
+        console.log("SQL Server Conectado");
+
+    }catch(error){
+        console.error("Error SQL Server", error);
+
+    }
+    
+};*/
+
diff --git a/backend/src/modules/roles/role.controller.ts b/backend/src/modules/roles/role.controller.ts
new file mode 100644
index 0000000..7646a6c
--- /dev/null
+++ b/backend/src/modules/roles/role.controller.ts
@@ -0,0 +1,30 @@
+import { Request, Response } from "express";
+
+import { RoleService } from "./role.service";
+
+const roleService = new RoleService();
+
+export class RoleController {
+
+    async getAll(
+        req:Request,
+        res:Response
+    ){
+        const roles = 
+        await roleService.getAll();
+        res.json(roles);
+    }
+
+    async create(
+
+        req:Request,
+        res:Response
+    ){
+        const role =
+        await roleService.create(
+            req.body
+        );
+
+        res.status(201).json(role);
+    }
+}
\ No newline at end of file
diff --git a/backend/src/modules/roles/role.interface.ts b/backend/src/modules/roles/role.interface.ts
new file mode 100644
index 0000000..02000ab
--- /dev/null
+++ b/backend/src/modules/roles/role.interface.ts
@@ -0,0 +1,6 @@
+export interface IRole {
+
+    roleName:string;
+    description:string;
+    active:boolean;
+}
\ No newline at end of file
diff --git a/backend/src/modules/roles/role.model.ts b/backend/src/modules/roles/role.model.ts
new file mode 100644
index 0000000..dceb07c
--- /dev/null
+++ b/backend/src/modules/roles/role.model.ts
@@ -0,0 +1,26 @@
+import mongoose, { Schema } from "mongoose";
+
+const roleSchema = new mongoose.Schema({
+
+    roleName:{
+        type:String,
+        required:true,
+        unique:true
+    },
+
+    description:{
+        type:String
+    },
+
+    active:{
+        type:Boolean,
+        default:true
+    }
+},
+
+{
+    timestamps:true
+}
+);
+
+export default mongoose.model("Role", roleSchema);
\ No newline at end of file
diff --git a/backend/src/modules/roles/role.routes.ts b/backend/src/modules/roles/role.routes.ts
new file mode 100644
index 0000000..e17e5a2
--- /dev/null
+++ b/backend/src/modules/roles/role.routes.ts
@@ -0,0 +1,13 @@
+import { Router } from "express";
+
+import { RoleController } from "./role.controller";
+
+const roleRoutes = Router();
+
+const controller = new RoleController();
+
+roleRoutes.get("/", controller.getAll);
+
+roleRoutes.post("/", controller.create);
+
+export default roleRoutes ;
\ No newline at end of file
diff --git a/backend/src/modules/roles/role.service.ts b/backend/src/modules/roles/role.service.ts
new file mode 100644
index 0000000..f36586f
--- /dev/null
+++ b/backend/src/modules/roles/role.service.ts
@@ -0,0 +1,12 @@
+import roleModel from "./role.model";
+
+export class RoleService {
+    async getAll() {
+
+        return await roleModel.find();
+    }
+
+    async create(data:any) {
+        return await roleModel.create(data);
+    }
+}
\ No newline at end of file
diff --git a/backend/src/modules/user/user.controller.ts b/backend/src/modules/user/user.controller.ts
new file mode 100644
index 0000000..3abdee8
--- /dev/null
+++ b/backend/src/modules/user/user.controller.ts
@@ -0,0 +1,66 @@
+import { Request, Response } from "express";
+
+import { UserService } from "./user.service";
+
+const userService = new UserService();
+
+export class UserController {
+
+    async getAll(
+        req:Request,
+        res:Response
+    ) {
+        const users = 
+        await userService.getAll();
+
+        res.json(users);
+    }
+
+    async getById(
+        req:Request,
+        res:Response
+    ){
+        const user =
+        await userService.getById(
+            req.params.id as string
+        );
+
+        res.json(user);
+    }
+
+    async create (
+        req:Request,
+        res:Response
+    ) {
+        const user =
+        await userService.create(
+            req.body
+        );
+        res.status(201).json(user);
+    }
+
+    async update(
+        req:Request,
+        res:Response
+    ){
+        const user =
+        await userService.update(
+            req.params.id as string,
+            req.body
+        );
+
+        res.json(user);
+    }
+
+    async detele (
+        req:Request,
+        res:Response
+    ) {
+        await userService.delete(
+            req.params.id as string
+        );
+
+        res.json({message: "Usuario eliminado"});
+    }
+    
+}
\ No newline at end of file
diff --git a/backend/src/modules/user/user.interface.ts b/backend/src/modules/user/user.interface.ts
new file mode 100644
index 0000000..bb16751
--- /dev/null
+++ b/backend/src/modules/user/user.interface.ts
@@ -0,0 +1,11 @@
+import { ObjectId } from "mongoose";
+
+export interface IUser {
+
+    employeeId:number;
+    userName:string;
+    passwordHash:string;
+    roleId:ObjectId;
+    active:boolean;
+    lastLogin:Date; 
+}
\ No newline at end of file
diff --git a/backend/src/modules/user/user.model.ts b/backend/src/modules/user/user.model.ts
new file mode 100644
index 0000000..65d10f5
--- /dev/null
+++ b/backend/src/modules/user/user.model.ts
@@ -0,0 +1,46 @@
+import mongoose from "mongoose";
+
+
+const userSchema = new mongoose.Schema({
+
+    employeeId:{
+        type:Number,
+        required:true,
+        unique:true,
+    },
+
+    userName:{
+        type:String,
+        required:true,
+        unique:true,
+    },
+
+    passwordHash:{
+        type:String,
+        required:true
+    },
+
+    roleId:{
+        type:mongoose.Types.ObjectId,
+        ref:"Role",
+        required:true
+    },
+
+    active:{
+        type:Boolean,
+        default:true
+    },
+
+    lastLogin:{
+        type:Date
+
+    }
+},
+
+{
+    timestamps:true
+}
+
+);
+
+export default mongoose.model("User", userSchema);
\ No newline at end of file
diff --git a/backend/src/modules/user/user.routes.ts b/backend/src/modules/user/user.routes.ts
new file mode 100644
index 0000000..df28ea9
--- /dev/null
+++ b/backend/src/modules/user/user.routes.ts
@@ -0,0 +1,19 @@
+import { Router } from "express";
+
+import { UserController } from "./user.controller";
+
+const userRoutes = Router();
+
+const controller = new UserController();
+
+userRoutes.get("/", controller.getAll);
+
+userRoutes.get("/:id", controller.getById);
+
+userRoutes.post("/", controller.create);
+
+userRoutes.put("/:id", controller.update);
+
+userRoutes.delete("/:id", controller.detele);
+
+export default userRoutes;
\ No newline at end of file
diff --git a/backend/src/modules/user/user.service.ts b/backend/src/modules/user/user.service.ts
new file mode 100644
index 0000000..1510cb4
--- /dev/null
+++ b/backend/src/modules/user/user.service.ts
@@ -0,0 +1,46 @@
+import userModel from "./user.model";
+
+export class UserService {
+
+    async getAll() {
+
+        return await userModel
+        .find()
+        .populate("roleId");
+    }
+
+    async getById(
+        id:string
+    ) {
+        return await userModel
+        .find()
+        .populate("roleId");
+    }
+
+    async create(
+        data:any
+    ) {
+        return await userModel.create(data);
+    }
+
+    async update(
+        id:string,
+        data:any
+    ) {
+        return await userModel.findByIdAndUpdate(
+            id,
+            data,
+            {
+                new:true
+            }
+        );
+    }
+
+    async delete(
+        id:string
+    ) {
+        return await userModel.findByIdAndDelete(
+            id
+        );
+    }
+}
\ No newline at end of file
diff --git a/backend/src/server.ts b/backend/src/server.ts
index e69de29..90ee09f 100644
--- a/backend/src/server.ts
+++ b/backend/src/server.ts
@@ -0,0 +1,31 @@
+import dotenv from "dotenv";
+
+dotenv.config();
+
+import { connectMongo } from "./config/mongodb";
+//import { connectSqlServer } from "./config/sqlserver";
+import app from "./app";
+
+const PORT = process.env.PORT || 5000;
+
+const startServer = async() => {
+
+    try {
+
+        await connectMongo();
+        //await connectSqlServer();
+
+
+    app.listen(PORT, () => {
+
+        console.log(`Servidor ejecutandose en puerto ${PORT}`);
+    });
+    
+    }catch(error){
+
+        console.error("Error al iniciar el servidor", error);
+    }
+
+};
+
+startServer();
\ No newline at end of file
diff --git a/backend/tsconfig.json b/backend/tsconfig.json
index cec4a3a..6f44b56 100644
--- a/backend/tsconfig.json
+++ b/backend/tsconfig.json
@@ -9,7 +9,7 @@
     // See also https://aka.ms/tsconfig/module
     "module": "nodenext",
     "target": "esnext",
-    "types": [],
+    "types": ["node"],
     // For nodejs:
     // "lib": ["esnext"],
     // "types": ["node"],
@@ -35,7 +35,7 @@
     // Recommended Options
     "strict": true,
     "jsx": "react-jsx",
-    "verbatimModuleSyntax": true,
+    //"verbatimModuleSyntax": true,
     "isolatedModules": true,
     "noUncheckedSideEffectImports": true,
     "moduleDetection": "force",