diff --git a/api/_helpers/error-handler.js b/api/_helpers/error-handler.js
index 1b92b07..b7dcf68 100644
--- a/api/_helpers/error-handler.js
+++ b/api/_helpers/error-handler.js
@@ -1,5 +1,4 @@
 module.exports = errorHandler;
-
 function errorHandler(err, req, res, next) {
   if (typeof err === "string") {
     // custom application error
diff --git a/api/_helpers/firebase-connector.js b/api/_helpers/firebase-connector.js
deleted file mode 100644
index d806e98..0000000
--- a/api/_helpers/firebase-connector.js
+++ /dev/null
@@ -1,17 +0,0 @@
-const environment = require("./environment");
-const firebaseAdmin = require("firebase-admin");
-
-const connect = (projectId) => {
-  const serviceAccount = environment.serverConfig.databases.firebase.databases
-    .filter((Database) => Database.project_id === projectId)
-    .pop();
-
-  firebaseAdmin.initializeApp({
-    credential: firebaseAdmin.credential.cert(serviceAccount),
-    databaseURL: `https://${projectId}.firebaseio.com`,
-  });
-
-  return firebaseAdmin.database();
-};
-
-module.exports = { connect };
diff --git a/api/_helpers/jwt.js b/api/_helpers/jwt.js
index 5433b5e..8bcb3d8 100644
--- a/api/_helpers/jwt.js
+++ b/api/_helpers/jwt.js
@@ -1,11 +1,9 @@
-const expressJwt = require("express-jwt");
-const environment = require("./environment");
-
-module.exports = jwt;
+import { environment } from "./environment";
+import { expressjwt } from "express-jwt";
 
 function jwt() {
   const { secret } = environment.serverConfig;
-  return expressJwt({ secret: secret, algorithms: ["HS256"] }).unless({
+  return expressjwt({ secret: secret, algorithms: ["HS256"] }).unless({
     path: [
       // public routes that don't require authentication
       "/users/authenticate",
@@ -15,3 +13,5 @@ function jwt() {
     ],
   });
 }
+
+module.exports = jwt;
diff --git a/api/_helpers/mysql-connector.js b/api/_helpers/mysql-connector.js
index de23b6f..bca9c5b 100644
--- a/api/_helpers/mysql-connector.js
+++ b/api/_helpers/mysql-connector.js
@@ -1,19 +1,11 @@
-const environment = require("./environment");
-const Sequelize = require("sequelize");
+import { environment } from "./environment";
+import { Sequelize } from "sequelize";
 
-const mysql = require("mysql2");
 const ceutDatabase = environment.serverConfig.databases.mysql.databases
   .filter((db) => db.id === "ceut-frsf")
   .pop();
 
-const mySqlConnection = mysql.createConnection({
-  host: ceutDatabase.host,
-  user: ceutDatabase.user,
-  database: ceutDatabase.database,
-  password: ceutDatabase.password,
-});
-
-const sequelizeConnection = new Sequelize(
+const sequelizeConnector = new Sequelize(
   ceutDatabase.database,
   ceutDatabase.user,
   ceutDatabase.password,
@@ -27,12 +19,4 @@ const sequelizeConnection = new Sequelize(
   }
 );
 
-module.exports = { mysqlConnector, sequelizeConnector };
-
-function mysqlConnector() {
-  return mySqlConnection;
-}
-
-function sequelizeConnector() {
-  return sequelizeConnection;
-}
+module.exports = { sequelizeConnector };
diff --git a/api/_helpers/sanity-connector.js b/api/_helpers/sanity-connector.js
index d413c0e..5ea0430 100644
--- a/api/_helpers/sanity-connector.js
+++ b/api/_helpers/sanity-connector.js
@@ -1,7 +1,7 @@
-const environment = require("./environment");
-const sanityClient = require("@sanity/client");
+import { environment } from "./environment";
+import { createClient } from "@sanity/client";
 
-const client = sanityClient({
+const client = createClient({
   projectId: environment.sanity.projectId,
   dataset: environment.sanity.dataset,
   apiVersion: "2019-01-29", // use current UTC date - see "specifying API version"!
diff --git a/api/_models/user/role.model.js b/api/_models/user/role.model.js
index 08d9c4b..6dcd111 100644
--- a/api/_models/user/role.model.js
+++ b/api/_models/user/role.model.js
@@ -1,8 +1,5 @@
-const Sequelize = require("sequelize");
-const connector = require("../../_helpers/mysql-connector");
-const sequelizeConnector = connector.sequelizeConnector();
-
-module.exports = () => Role;
+import { sequelizeConnector } from "../../_helpers/mysql-connector";
+import { Sequelize } from "sequelize";
 
 class Role extends Sequelize.Model {}
 
@@ -45,3 +42,5 @@ Role.init(
     modelName: "role",
   }
 );
+
+module.exports = { Role };
diff --git a/api/_models/user/user-role.model.js b/api/_models/user/user-role.model.js
index 8547f14..83f3f18 100644
--- a/api/_models/user/user-role.model.js
+++ b/api/_models/user/user-role.model.js
@@ -1,8 +1,5 @@
-const Sequelize = require("sequelize");
-const connector = require("../../_helpers/mysql-connector");
-const sequelizeConnector = connector.sequelizeConnector();
-
-module.exports = () => UserRole;
+import { Sequelize } from "sequelize";
+import { sequelizeConnector } from "../../_helpers/mysql-connector";
 
 class UserRole extends Sequelize.Model {}
 
@@ -54,3 +51,5 @@ UserRole.init(
     modelName: "user_role",
   }
 );
+
+module.exports = { UserRole };
diff --git a/api/_models/user/user.model.js b/api/_models/user/user.model.js
index af815f2..e049c7d 100644
--- a/api/_models/user/user.model.js
+++ b/api/_models/user/user.model.js
@@ -1,14 +1,10 @@
-const Sequelize = require("sequelize");
-const connector = require("../../_helpers/mysql-connector");
-const sequelizeConnector = connector.sequelizeConnector();
-
-const Role = require("./role.model");
-const userRole = require("./user-role.model");
+import { Sequelize } from "sequelize";
+import { sequelizeConnector } from "../../_helpers/mysql-connector";
+import Role from "./role.model";
+import UserRole from "./user-role.model";
 
 class User extends Sequelize.Model {}
 
-module.exports = () => User;
-
 User.init(
   {
     id: {
@@ -71,12 +67,14 @@ User.init(
 );
 
 // Mediante las dos llamadas siguientes, se define en Sequelize la relación N a M entre Role y User
-User.belongsToMany(Role(), {
-  through: userRole(),
+User.belongsToMany(Role, {
+  through: UserRole,
   foreignKey: "id_user",
 });
 
 Role().belongsToMany(User, {
-  through: userRole(),
+  through: UserRole,
   foreignKey: "id_role",
 });
+
+module.exports = { User };
diff --git a/api/cards/[id].js b/api/cards/[id].js
index e2c95ac..9123f76 100644
--- a/api/cards/[id].js
+++ b/api/cards/[id].js
@@ -1,4 +1,4 @@
-const sanityConnector = require("../_helpers/sanity-connector");
+import sanityConnector from "../_helpers/sanity-connector";
 
 export default async function getById(req, res) {
   const { id } = req.query;
diff --git a/api/cards/active.js b/api/cards/active.js
index a39cb0a..09d0f55 100644
--- a/api/cards/active.js
+++ b/api/cards/active.js
@@ -1,7 +1,6 @@
 "use strict";
 
-const sanityConnector = require("../_helpers/sanity-connector");
-
+import { sanityConnector } from "../_helpers/sanity-connector";
 export default async function get(req, res) {
   const cards = await sanityConnector.client.fetch(`*`, {});
   const fixedCardIds = cards.filter((card) => card._type === "fixedCards").pop()
diff --git a/api/cards/fixed.js b/api/cards/fixed.js
index dcd2017..ffd8739 100644
--- a/api/cards/fixed.js
+++ b/api/cards/fixed.js
@@ -1,7 +1,8 @@
 "use strict";
 
-const sanityConnector = require("../_helpers/sanity-connector");
 //TODO: Put this endpoint to work and retrieve the fixed cards.
+import sanityConnector from "../_helpers/sanity-connector";
+
 export default async function getFixed(req, res) {
   const query = `*[_type == 'fixedCards']`;
   const cards = await sanityConnector.client.fetch(query, {});
diff --git a/api/courses/elective.js b/api/courses/elective.js
index bac4978..119c36f 100644
--- a/api/courses/elective.js
+++ b/api/courses/elective.js
@@ -1,10 +1,11 @@
-const environment = require("../_helpers/environment");
+import { environment } from "../_helpers/environment";
+import airtable from "airtable";
+
 const cuenta = environment.serverConfig.airtable.cuentas
   .filter((Cuenta) => Cuenta.id === "metas")
   .pop();
 
 //Se configura el objeto Airtable para hacer las consultas y obtener datos con los métodos
-const airtable = require("airtable");
 airtable.configure({
   endpointUrl: environment.serverConfig.airtable.endpointUrl,
   apiKey: cuenta.key,
diff --git a/api/electoral-register/get.js b/api/electoral-register/get.js
index 833ec28..07e82f4 100644
--- a/api/electoral-register/get.js
+++ b/api/electoral-register/get.js
@@ -1,5 +1,5 @@
-const environment = require("../_helpers/environment");
-const { google } = require("googleapis");
+import { environment } from "../_helpers/environment";
+import { googleapis } from "googleapis";
 
 const apiKey = environment.google.apiKey;
 const clientId = environment.google.clientId;
@@ -11,7 +11,7 @@ export default async function get(req, res) {
 
 async function obtenerPadronDesdeGoogleSheets() {
   return new Promise((resolve, reject) => {
-    const sheets = google.sheets({ version: "v4", auth: apiKey });
+    const sheets = googleapis.sheets({ version: "v4", auth: apiKey });
 
     sheets.spreadsheets.values.get(
       {
@@ -26,7 +26,7 @@ async function obtenerPadronDesdeGoogleSheets() {
             legajo: row[0],
             dni: row[1],
             name: row[2],
-            carrera: row[3]
+            carrera: row[3],
           };
         });
         resolve(result);
diff --git a/api/sports/get.js b/api/sports/get.js
index 3376bb3..98159d7 100644
--- a/api/sports/get.js
+++ b/api/sports/get.js
@@ -1,10 +1,11 @@
-const environment = require("../_helpers/environment");
+import airtable from "airtable";
+import { environment } from "../_helpers/environment";
+
 const cuenta = environment.serverConfig.airtable.cuentas
   .filter((Cuenta) => Cuenta.id === "ceut")
   .pop();
 
 //Se configura el objeto Airtable para hacer las consultas y obtener datos con los métodos
-const airtable = require("airtable");
 airtable.configure({
   endpointUrl: environment.serverConfig.airtable.endpointUrl,
   apiKey: cuenta.key,
diff --git a/api/users/authenticate.js b/api/users/authenticate.js
index 3e0a579..c1eda53 100644
--- a/api/users/authenticate.js
+++ b/api/users/authenticate.js
@@ -1,17 +1,18 @@
-const User = require("../_models/user/user.model");
-const Role = require("../_models/user/role.model");
-const bcrypt = require("bcrypt");
-const jwt = require("jsonwebtoken");
-const environment = require("../_helpers/environment");
+import User from "../_models/user/user.model";
+import Role from "../_models/user/role.model";
+import bcrypt from "bcrypt";
+import { environment } from "../_helpers/environment";
+
+import { jsonwebtoken as jwt } from "jsonwebtoken";
 
 export default async function authenticate(req, res) {
   const { userName, password } = req.body;
 
-  const user = await User().findOne({
+  const user = await User.findOne({
     raw: true,
     include: [
       {
-        model: Role(),
+        model: Role,
         required: true,
         attributes: ["id", "description"],
         through: { attributes: [] },
diff --git a/api/users/get.js b/api/users/get.js
index d1e026e..8f48c91 100644
--- a/api/users/get.js
+++ b/api/users/get.js
@@ -1,4 +1,4 @@
-const User = require("../_models/user/user.model");
+import { User } from "../../src/app/_models";
 
 export default async function get(req, res) {
   const users = await User().findAll();