diff --git a/backend/src/modules/seeders/initialData.seed.ts b/backend/src/modules/seeders/initialData.seed.ts
new file mode 100644
index 0000000..4395f01
--- /dev/null
+++ b/backend/src/modules/seeders/initialData.seed.ts
@@ -0,0 +1,646 @@
+import mongoose from "mongoose";
+import bcrypt from "bcrypt";
+import dotenv from "dotenv";
+
+import roleModel from "../roles/role.model";
+import userModel from "../user/user.model";
+import permissionModel from "../permissions/permission.model";
+import rolePermissionModel from "../role-permissions/rolePermission.model";
+
+
+async function seedDatabase() {
+
+    try {
+
+        console.log("=================================");
+        console.log("Iniciando Seeder...");
+        console.log("=================================");
+
+        await mongoose.connect(
+            process.env.MONGO_URI as string
+        );
+
+        console.log("MongoDB conectado.");
+
+        const roleExists = await roleModel.findOne({
+
+            roleName: "ADMINISTRADOR"
+
+        });
+
+        if (roleExists) {
+
+            console.log("El sistema ya fue inicializado.");
+
+            await mongoose.disconnect();
+
+            return;
+
+        }
+
+        const adminRole = await roleModel.create({
+
+        roleName: "ADMINISTRADOR",
+
+        description: "Administrador del sistema",
+
+        active: true
+
+        });
+
+            // Encriptar contraseña
+        const passwordHash = await bcrypt.hash(
+
+            "Admin123",
+
+            10
+
+        );
+
+        // Crear usuario administrador
+        const adminUser = await userModel.create({
+
+            employeeId: 1, 
+
+            userName: "admin",
+
+            passwordHash,
+
+            roleId: adminRole._id,
+
+            active: true
+
+        });
+
+        console.log("Usuario Administrador creado.");
+
+        console.log("Rol Administrador creado.");
+
+        const permissions = [
+        
+            // AUTH
+            {
+                name: "Iniciar Sesión",
+                module: "auth",
+                action: "login",
+                description: "Permite iniciar sesión"
+            },
+            {
+                name: "Cerrar Sesión",
+                module: "auth",
+                action: "logout",
+                description: "Permite cerrar sesión"
+            },
+            {
+                name: "Cambiar Contraseña",
+                module: "auth",
+                action: "change-password",
+                description: "Permite cambiar contraseña"
+            },
+
+        
+            // USERS
+
+            {
+                name: "Ver Usuarios",
+                module: "users",
+                action: "read",
+                description: "Consultar usuarios"
+            },
+            {
+                name: "Crear Usuarios",
+                module: "users",
+                action: "create",
+                description: "Crear usuarios"
+            },
+            {
+                name: "Actualizar Usuarios",
+                module: "users",
+                action: "update",
+                description: "Actualizar usuarios"
+            },
+            {
+                name: "Eliminar Usuarios",
+                module: "users",
+                action: "delete",
+                description: "Eliminar usuarios"
+            },
+
+
+            // ROLES
+
+            {
+                name: "Ver Roles",
+                module: "roles",
+                action: "read",
+                description: "Consultar roles"
+            },
+            {
+                name: "Crear Roles",
+                module: "roles",
+                action: "create",
+                description: "Crear roles"
+            },
+            {
+                name: "Actualizar Roles",
+                module: "roles",
+                action: "update",
+                description: "Actualizar roles"
+            },
+            {
+                name: "Eliminar Roles",
+                module: "roles",
+                action: "delete",
+                description: "Eliminar roles"
+            },
+
+
+            // PERMISSIONS
+
+            {
+                name: "Ver Permisos",
+                module: "permissions",
+                action: "read",
+                description: "Consultar permisos"
+            },
+            {
+                name: "Crear Permisos",
+                module: "permissions",
+                action: "create",
+                description: "Crear permisos"
+            },
+            {
+                name: "Actualizar Permisos",
+                module: "permissions",
+                action: "update",
+                description: "Actualizar permisos"
+            },
+            {
+                name: "Eliminar Permisos",
+                module: "permissions",
+                action: "delete",
+                description: "Eliminar permisos"
+            },
+
+
+            // ROLE PERMISSIONS
+
+            {
+                name: "Ver Configuración de Permisos",
+                module: "role-permissions",
+                action: "read",
+                description: "Consultar permisos por rol"
+            },
+            {
+                name: "Asignar Permisos",
+                module: "role-permissions",
+                action: "create",
+                description: "Asignar permisos a un rol"
+            },
+            {
+                name: "Actualizar Configuración de Permisos",
+                module: "role-permissions",
+                action: "update",
+                description: "Actualizar permisos de un rol"
+            },
+            {
+                name: "Eliminar Configuración de Permisos",
+                module: "role-permissions",
+                action: "delete",
+                description: "Eliminar configuración de permisos"
+            },
+
+
+        // FUEL TYPES
+
+        {
+            name: "Ver Tipos de Combustible",
+            module: "fuel-types",
+            action: "read",
+            description: "Consultar tipos de combustible"
+        },
+        {
+            name: "Crear Tipo de Combustible",
+            module: "fuel-types",
+            action: "create",
+            description: "Crear tipo de combustible"
+        },
+        {
+            name: "Actualizar Tipo de Combustible",
+            module: "fuel-types",
+            action: "update",
+            description: "Actualizar tipo de combustible"
+        },
+        {
+            name: "Eliminar Tipo de Combustible",
+            module: "fuel-types",
+            action: "delete",
+            description: "Eliminar tipo de combustible"
+        },
+    
+        // FUEL REQUESTS
+        {
+            name: "Ver Solicitudes de Combustible",
+            module: "fuel-requests",
+            action: "read",
+            description: "Consultar solicitudes de combustible"
+        },
+        {
+            name: "Crear Solicitud de Combustible",
+            module: "fuel-requests",
+            action: "create",
+            description: "Crear solicitud de combustible"
+        },
+        {
+            name: "Actualizar Solicitud de Combustible",
+            module: "fuel-requests",
+            action: "update",
+            description: "Actualizar solicitud de combustible"
+        },
+        {
+            name: "Eliminar Solicitud de Combustible",
+            module: "fuel-requests",
+            action: "delete",
+            description: "Eliminar solicitud de combustible"
+        },
+
+        // FUEL LOADS
+        {
+            name: "Ver Cargas de Combustible",
+            module: "fuel-loads",
+            action: "read",
+            description: "Consultar cargas de combustible"
+        },
+        {
+            name: "Registrar Carga de Combustible",
+            module: "fuel-loads",
+            action: "create",
+            description: "Registrar carga de combustible"
+        },
+        {
+            name: "Actualizar Carga de Combustible",
+            module: "fuel-loads",
+            action: "update",
+            description: "Actualizar carga de combustible"
+        },
+        {
+            name: "Eliminar Carga de Combustible",
+            module: "fuel-loads",
+            action: "delete",
+            description: "Eliminar carga de combustible"
+        },
+
+        // EXTERNAL INVOICES
+
+
+        {
+            name: "Ver Facturas Externas",
+            module: "external-invoices",
+            action: "read",
+            description: "Consultar facturas externas"
+        },
+        {
+            name: "Crear Factura Externa",
+            module: "external-invoices",
+            action: "create",
+            description: "Registrar factura externa"
+        },
+        {
+            name: "Actualizar Factura Externa",
+            module: "external-invoices",
+            action: "update",
+            description: "Actualizar factura externa"
+        },
+        {
+            name: "Eliminar Factura Externa",
+            module: "external-invoices",
+            action: "delete",
+            description: "Eliminar factura externa"
+        },
+
+
+        // APPROVALS
+
+        {
+            name: "Ver Aprobaciones",
+            module: "approvals",
+            action: "read",
+            description: "Consultar aprobaciones"
+        },
+        {
+            name: "Aprobar Solicitud",
+            module: "approvals",
+            action: "approve",
+            description: "Aprobar solicitud"
+        },
+        {
+            name: "Rechazar Solicitud",
+            module: "approvals",
+            action: "reject",
+            description: "Rechazar solicitud"
+        },
+        {
+            name: "Eliminar Aprobación",
+            module: "approvals",
+            action: "delete",
+            description: "Eliminar aprobación"
+        },
+
+    
+        // PUMP READINGS
+
+        {
+            name: "Ver Lecturas de Bomba",
+            module: "pump-readings",
+            action: "read",
+            description: "Consultar lecturas de bomba"
+        },
+        {
+            name: "Actualizar Lectura de Bomba",
+            module: "pump-readings",
+            action: "update",
+            description: "Actualizar lectura de bomba"
+        },
+        {
+            name: "Calcular Galones Despachados",
+            module: "pump-readings",
+            action: "calculate-dispensed",
+            description: "Calcular galones despachados"
+        },
+        {
+            name: "Calcular Galones del Sistema",
+            module: "pump-readings",
+            action: "calculate-system",
+            description: "Calcular galones registrados por el sistema"
+        },
+        {
+            name: "Calcular Diferencia",
+            module: "pump-readings",
+            action: "calculate-difference",
+            description: "Calcular diferencia entre sistema y bomba"
+        },
+        {
+            name: "Actualizar Estado de Lectura",
+            module: "pump-readings",
+            action: "update-status",
+            description: "Actualizar estado de la lectura"
+        },
+        {
+            name: "Actualizar Solicitudes Relacionadas",
+            module: "pump-readings",
+            action: "update-requests",
+            description: "Actualizar solicitudes relacionadas"
+        },
+        {
+            name: "Crear Anomalía",
+            module: "pump-readings",
+            action: "create-anomaly",
+            description: "Registrar anomalía por diferencia"
+        },
+        {
+            name: "Cerrar Lectura",
+            module: "pump-readings",
+            action: "close",
+            description: "Cerrar lectura diaria de bomba"
+        },
+
+        // CATALOGS
+
+        {
+            name: "Ver Empleados",
+            module: "catalogs",
+            action: "employees-read",
+            description: "Consultar empleados"
+        },
+        {
+            name: "Ver Vehículos",
+            module: "catalogs",
+            action: "vehicles-read",
+            description: "Consultar vehículos"
+        },
+        {
+            name: "Ver Departamentos",
+            module: "catalogs",
+            action: "departments-read",
+            description: "Consultar departamentos"
+        },
+        {
+            name: "Ver Rutas",
+            module: "catalogs",
+            action: "routes-read",
+            description: "Consultar rutas"
+        },
+
+        // AUDIT LOGS
+
+        {
+            name: "Ver Auditoría",
+            module: "audit-logs",
+            action: "read",
+            description: "Consultar registros de auditoría"
+        },
+        {
+            name: "Crear Auditoría",
+            module: "audit-logs",
+            action: "create",
+            description: "Registrar eventos en auditoría"
+        },
+        {
+            name: "Eliminar Auditoría",
+            module: "audit-logs",
+            action: "delete",
+            description: "Eliminar registros de auditoría"
+        },
+
+        // REPORTS
+
+        {
+            name: "Resumen General",
+            module: "reports",
+            action: "summary",
+            description: "Consultar resumen general"
+        },
+
+        {
+            name: "Reporte de Combustible por Ruta",
+            module: "reports",
+            action: "fuel-route",
+            description: "Consultar combustible por ruta"
+        },
+        {
+            name: "Reporte de Combustible por Departamento",
+            module: "reports",
+            action: "fuel-department",
+            description: "Consultar combustible por departamento"
+        },
+        {
+            name: "Reporte de Combustible por Vehículo",
+            module: "reports",
+            action: "fuel-vehicle",
+            description: "Consultar combustible por vehículo"
+        },
+        {
+            name: "Reporte de Combustible por Empleado",
+            module: "reports",
+            action: "fuel-employee",
+            description: "Consultar combustible por empleado"
+        },
+
+        {
+            name: "Reporte de Kilómetros por Ruta",
+            module: "reports",
+            action: "distance-route",
+            description: "Consultar kilómetros por ruta"
+        },
+        {
+            name: "Reporte de Kilómetros por Departamento",
+            module: "reports",
+            action: "distance-department",
+            description: "Consultar kilómetros por departamento"
+        },
+        {
+            name: "Reporte de Kilómetros por Vehículo",
+            module: "reports",
+            action: "distance-vehicle",
+            description: "Consultar kilómetros por vehículo"
+        },
+        {
+            name: "Reporte de Kilómetros por Empleado",
+            module: "reports",
+            action: "distance-employee",
+            description: "Consultar kilómetros por empleado"
+        },
+
+        {
+            name: "Reporte de Rendimiento",
+            module: "reports",
+            action: "vehicle-performance",
+            description: "Consultar rendimiento por vehículo"
+        },
+
+        {
+            name: "Historial de Vehículo",
+            module: "reports",
+            action: "vehicle-history",
+            description: "Consultar historial de vehículo"
+        },
+        {
+            name: "Historial de Empleado",
+            module: "reports",
+            action: "employee-history",
+            description: "Consultar historial de empleado"
+        },
+        {
+            name: "Empleado por Vehículo",
+            module: "reports",
+            action: "employee-by-vehicle",
+            description: "Consultar empleado asignado al vehículo"
+        },
+        {
+            name: "Vehículos por Empleado",
+            module: "reports",
+            action: "vehicles-by-employee",
+            description: "Consultar vehículos asignados al empleado"
+        },
+
+        {
+            name: "Reporte de Anomalías",
+            module: "reports",
+            action: "anomalies",
+            description: "Consultar anomalías"
+        },
+
+        {
+            name: "Reporte de Facturas por Zona",
+            module: "reports",
+            action: "invoice-zones",
+            description: "Consultar facturas por zona"
+        },
+
+        {
+            name: "Ranking de Gastos por Ruta",
+            module: "reports",
+            action: "route-expense-ranking",
+            description: "Consultar ranking de gastos por ruta"
+        },
+        {
+            name: "Gasto por Ruta",
+            module: "reports",
+            action: "expense-route",
+            description: "Consultar gasto por ruta"
+        },
+        {
+            name: "Gasto por Departamento",
+            module: "reports",
+            action: "expense-department",
+            description: "Consultar gasto por departamento"
+        },
+        {
+            name: "Gasto por Vehículo",
+            module: "reports",
+            action: "expense-vehicle",
+            description: "Consultar gasto por vehículo"
+        },
+
+        {
+            name: "Ranking de Consumo de Vehículos",
+            module: "reports",
+            action: "vehicle-consumption-ranking",
+            description: "Consultar ranking de consumo"
+        },
+
+        {
+            name: "Dashboard",
+            module: "reports",
+            action: "dashboard",
+            description: "Consultar dashboard"
+        }
+
+    ];
+
+    const permissionsToInsert = permissions.map((permission: any) => ({
+
+        ...permission,
+
+        active: true,
+
+        createdBy: adminUser._id
+
+    }));
+
+    const createdPermissions = await permissionModel.insertMany(
+        permissionsToInsert
+    );
+
+    console.log(`${createdPermissions.length} permisos creados.`);
+
+    await rolePermissionModel.create({
+
+        roleId: adminRole._id,
+
+        permissions: createdPermissions.map(
+            permission => permission._id
+        ),
+
+        active: true,
+
+        createdBy: adminUser._id
+
+    });
+
+    console.log("Permisos asignados al rol Administrador.");
+
+    await mongoose.disconnect();
+
+    console.log("Seeder ejecutado correctamente.");
+
+    } catch (error) {
+
+        console.error(error);
+        await mongoose.disconnect();
+
+    }
+
+}
+
+seedDatabase();
\ No newline at end of file