diff --git a/packages/backend/package.json b/packages/backend/package.json
index 1c77872c..949f0f4b 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -5,7 +5,7 @@
   "description": "The open source Zapier alternative. Build workflow automation without spending time and money.",
   "type": "module",
   "scripts": {
-    "dev": "ts-node-dev --watch 'src/graphql/schema.graphql' --exit-child src/server.ts",
+    "dev": "nodemon --watch 'src/**/*.js' --exec 'node' src/server.js",
     "worker": "nodemon --watch 'src/**/*.js' --exec 'node' src/worker.js",
     "build": "tsc && yarn copy-statics",
     "build:watch": "nodemon --watch 'src/**/*.js' --watch 'bin/**/*.ts' --exec yarn build --ext ts",
diff --git a/packages/backend/src/app.js b/packages/backend/src/app.js
index aef7ea6b..170439ba 100644
--- a/packages/backend/src/app.js
+++ b/packages/backend/src/app.js
@@ -2,21 +2,21 @@ import createError from 'http-errors';
 import express from 'express';
 import cors from 'cors';
 
-import appConfig from './config/app';
-import corsOptions from './config/cors-options';
-import morgan from './helpers/morgan';
-import * as Sentry from './helpers/sentry.ee';
-import appAssetsHandler from './helpers/app-assets-handler';
-import webUIHandler from './helpers/web-ui-handler';
-import errorHandler from './helpers/error-handler';
-import './config/orm';
+import appConfig from './config/app.js';
+import corsOptions from './config/cors-options.js';
+import morgan from './helpers/morgan.js';
+import * as Sentry from './helpers/sentry.ee.js';
+import appAssetsHandler from './helpers/app-assets-handler.js';
+import webUIHandler from './helpers/web-ui-handler.js';
+import errorHandler from './helpers/error-handler.js';
+import './config/orm.js';
 import {
   createBullBoardHandler,
   serverAdapter,
-} from './helpers/create-bull-board-handler';
-import injectBullBoardHandler from './helpers/inject-bull-board-handler';
-import router from './routes';
-import configurePassport from './helpers/passport';
+} from './helpers/create-bull-board-handler.js';
+import injectBullBoardHandler from './helpers/inject-bull-board-handler.js';
+import router from './routes/index.js';
+import configurePassport from './helpers/passport.js';
 
 createBullBoardHandler(serverAdapter);
 
diff --git a/packages/backend/src/config/cors-options.js b/packages/backend/src/config/cors-options.js
index bff4b542..c96a2d4a 100644
--- a/packages/backend/src/config/cors-options.js
+++ b/packages/backend/src/config/cors-options.js
@@ -1,4 +1,4 @@
-import appConfig from './app';
+import appConfig from './app.js';
 
 const corsOptions = {
   origin: appConfig.webAppUrl,
diff --git a/packages/backend/src/controllers/paddle/webhooks.ee.js b/packages/backend/src/controllers/paddle/webhooks.ee.js
index 62c27d23..b2d3e509 100644
--- a/packages/backend/src/controllers/paddle/webhooks.ee.js
+++ b/packages/backend/src/controllers/paddle/webhooks.ee.js
@@ -1,7 +1,7 @@
 import crypto from 'crypto';
 import { serialize } from 'php-serialize';
-import Billing from '../../helpers/billing/index.ee';
-import appConfig from '../../config/app';
+import Billing from '../../helpers/billing/index.ee.js';
+import appConfig from '../../config/app.js';
 
 export default async (request, response) => {
   if (!verifyWebhook(request)) {
diff --git a/packages/backend/src/controllers/webhooks/handler-by-connection-id-and-ref-value.js b/packages/backend/src/controllers/webhooks/handler-by-connection-id-and-ref-value.js
index 3e21bb03..2f5c611f 100644
--- a/packages/backend/src/controllers/webhooks/handler-by-connection-id-and-ref-value.js
+++ b/packages/backend/src/controllers/webhooks/handler-by-connection-id-and-ref-value.js
@@ -1,8 +1,8 @@
 import path from 'node:path';
 
-import Connection from '../../models/connection';
-import logger from '../../helpers/logger';
-import handler from '../../helpers/webhook-handler';
+import Connection from '../../models/connection.js';
+import logger from '../../helpers/logger.js';
+import handler from '../../helpers/webhook-handler.js';
 
 export default async (request, response) => {
   const computedRequestPayload = {
diff --git a/packages/backend/src/controllers/webhooks/handler-by-flow-id.js b/packages/backend/src/controllers/webhooks/handler-by-flow-id.js
index c262c857..5ed0fd67 100644
--- a/packages/backend/src/controllers/webhooks/handler-by-flow-id.js
+++ b/packages/backend/src/controllers/webhooks/handler-by-flow-id.js
@@ -1,6 +1,6 @@
-import Flow from '../../models/flow';
-import logger from '../../helpers/logger';
-import handler from '../../helpers/webhook-handler';
+import Flow from '../../models/flow.js';
+import logger from '../../helpers/logger.js';
+import handler from '../../helpers/webhook-handler.js';
 
 export default async (request, response) => {
   const computedRequestPayload = {
diff --git a/packages/backend/src/errors/quote-exceeded.js b/packages/backend/src/errors/quote-exceeded.js
index 6a3239d0..7ca48d3c 100644
--- a/packages/backend/src/errors/quote-exceeded.js
+++ b/packages/backend/src/errors/quote-exceeded.js
@@ -1,4 +1,4 @@
-import BaseError from './base';
+import BaseError from './base.js';
 
 export default class QuotaExceededError extends BaseError {
   constructor(error = 'The allowed task quota has been exhausted!') {
diff --git a/packages/backend/src/graphql/mutation-resolvers.js b/packages/backend/src/graphql/mutation-resolvers.js
index 1dc619e5..5d90f137 100644
--- a/packages/backend/src/graphql/mutation-resolvers.js
+++ b/packages/backend/src/graphql/mutation-resolvers.js
@@ -1,37 +1,37 @@
-import createAppAuthClient from './mutations/create-app-auth-client.ee';
-import createAppConfig from './mutations/create-app-config.ee';
-import createConnection from './mutations/create-connection';
-import createFlow from './mutations/create-flow';
-import createRole from './mutations/create-role.ee';
-import createStep from './mutations/create-step';
-import createUser from './mutations/create-user.ee';
-import deleteConnection from './mutations/delete-connection';
-import deleteCurrentUser from './mutations/delete-current-user.ee';
-import deleteFlow from './mutations/delete-flow';
-import deleteRole from './mutations/delete-role.ee';
-import deleteStep from './mutations/delete-step';
-import deleteUser from './mutations/delete-user.ee';
-import duplicateFlow from './mutations/duplicate-flow';
-import executeFlow from './mutations/execute-flow';
-import forgotPassword from './mutations/forgot-password.ee';
-import generateAuthUrl from './mutations/generate-auth-url';
-import login from './mutations/login';
-import registerUser from './mutations/register-user.ee';
-import resetConnection from './mutations/reset-connection';
-import resetPassword from './mutations/reset-password.ee';
-import updateAppAuthClient from './mutations/update-app-auth-client.ee';
-import updateAppConfig from './mutations/update-app-config.ee';
-import updateConfig from './mutations/update-config.ee';
-import updateConnection from './mutations/update-connection';
-import updateCurrentUser from './mutations/update-current-user';
-import updateFlow from './mutations/update-flow';
-import updateFlowStatus from './mutations/update-flow-status';
-import updateRole from './mutations/update-role.ee';
-import updateStep from './mutations/update-step';
-import updateUser from './mutations/update-user.ee';
-import upsertSamlAuthProvider from './mutations/upsert-saml-auth-provider.ee';
-import upsertSamlAuthProvidersRoleMappings from './mutations/upsert-saml-auth-providers-role-mappings.ee';
-import verifyConnection from './mutations/verify-connection';
+import createAppAuthClient from './mutations/create-app-auth-client.ee.js';
+import createAppConfig from './mutations/create-app-config.ee.js';
+import createConnection from './mutations/create-connection.js';
+import createFlow from './mutations/create-flow.js';
+import createRole from './mutations/create-role.ee.js';
+import createStep from './mutations/create-step.js';
+import createUser from './mutations/create-user.ee.js';
+import deleteConnection from './mutations/delete-connection.js';
+import deleteCurrentUser from './mutations/delete-current-user.ee.js';
+import deleteFlow from './mutations/delete-flow.js';
+import deleteRole from './mutations/delete-role.ee.js';
+import deleteStep from './mutations/delete-step.js';
+import deleteUser from './mutations/delete-user.ee.js';
+import duplicateFlow from './mutations/duplicate-flow.js';
+import executeFlow from './mutations/execute-flow.js';
+import forgotPassword from './mutations/forgot-password.ee.js';
+import generateAuthUrl from './mutations/generate-auth-url.js';
+import login from './mutations/login.js';
+import registerUser from './mutations/register-user.ee.js';
+import resetConnection from './mutations/reset-connection.js';
+import resetPassword from './mutations/reset-password.ee.js';
+import updateAppAuthClient from './mutations/update-app-auth-client.ee.js';
+import updateAppConfig from './mutations/update-app-config.ee.js';
+import updateConfig from './mutations/update-config.ee.js';
+import updateConnection from './mutations/update-connection.js';
+import updateCurrentUser from './mutations/update-current-user.js';
+import updateFlow from './mutations/update-flow.js';
+import updateFlowStatus from './mutations/update-flow-status.js';
+import updateRole from './mutations/update-role.ee.js';
+import updateStep from './mutations/update-step.js';
+import updateUser from './mutations/update-user.ee.js';
+import upsertSamlAuthProvider from './mutations/upsert-saml-auth-provider.ee.js';
+import upsertSamlAuthProvidersRoleMappings from './mutations/upsert-saml-auth-providers-role-mappings.ee.js';
+import verifyConnection from './mutations/verify-connection.js';
 
 const mutationResolvers = {
   createAppAuthClient,
diff --git a/packages/backend/src/graphql/mutations/create-app-auth-client.ee.js b/packages/backend/src/graphql/mutations/create-app-auth-client.ee.js
index d0536cc1..6af40984 100644
--- a/packages/backend/src/graphql/mutations/create-app-auth-client.ee.js
+++ b/packages/backend/src/graphql/mutations/create-app-auth-client.ee.js
@@ -1,4 +1,4 @@
-import AppConfig from '../../models/app-config';
+import AppConfig from '../../models/app-config.js';
 
 const createAppAuthClient = async (_parent, params, context) => {
   context.currentUser.can('update', 'App');
diff --git a/packages/backend/src/graphql/mutations/create-app-config.ee.js b/packages/backend/src/graphql/mutations/create-app-config.ee.js
index 4a699b25..32b1debc 100644
--- a/packages/backend/src/graphql/mutations/create-app-config.ee.js
+++ b/packages/backend/src/graphql/mutations/create-app-config.ee.js
@@ -1,5 +1,5 @@
-import App from '../../models/app';
-import AppConfig from '../../models/app-config';
+import App from '../../models/app.js';
+import AppConfig from '../../models/app-config.js';
 
 const createAppConfig = async (_parent, params, context) => {
   context.currentUser.can('update', 'App');
diff --git a/packages/backend/src/graphql/mutations/create-connection.js b/packages/backend/src/graphql/mutations/create-connection.js
index f2498e91..2378a0eb 100644
--- a/packages/backend/src/graphql/mutations/create-connection.js
+++ b/packages/backend/src/graphql/mutations/create-connection.js
@@ -1,5 +1,5 @@
-import App from '../../models/app';
-import AppConfig from '../../models/app-config';
+import App from '../../models/app.js';
+import AppConfig from '../../models/app-config.js';
 
 const createConnection = async (_parent, params, context) => {
   context.currentUser.can('create', 'Connection');
diff --git a/packages/backend/src/graphql/mutations/create-flow.js b/packages/backend/src/graphql/mutations/create-flow.js
index 3cd11aa1..c16166d9 100644
--- a/packages/backend/src/graphql/mutations/create-flow.js
+++ b/packages/backend/src/graphql/mutations/create-flow.js
@@ -1,5 +1,5 @@
-import App from '../../models/app';
-import Step from '../../models/step';
+import App from '../../models/app.js';
+import Step from '../../models/step.js';
 
 const createFlow = async (_parent, params, context) => {
   context.currentUser.can('create', 'Flow');
diff --git a/packages/backend/src/graphql/mutations/create-role.ee.js b/packages/backend/src/graphql/mutations/create-role.ee.js
index 1a0b08c0..7e85207b 100644
--- a/packages/backend/src/graphql/mutations/create-role.ee.js
+++ b/packages/backend/src/graphql/mutations/create-role.ee.js
@@ -1,5 +1,5 @@
-import kebabCase from 'lodash/kebabCase';
-import Role from '../../models/role';
+import kebabCase from 'lodash/kebabCase.js';
+import Role from '../../models/role.js';
 
 const createRole = async (_parent, params, context) => {
   context.currentUser.can('create', 'Role');
diff --git a/packages/backend/src/graphql/mutations/create-step.js b/packages/backend/src/graphql/mutations/create-step.js
index d037e8fc..05b8d364 100644
--- a/packages/backend/src/graphql/mutations/create-step.js
+++ b/packages/backend/src/graphql/mutations/create-step.js
@@ -1,5 +1,5 @@
-import App from '../../models/app';
-import Flow from '../../models/flow';
+import App from '../../models/app.js';
+import Flow from '../../models/flow.js';
 
 const createStep = async (_parent, params, context) => {
   const conditions = context.currentUser.can('update', 'Flow');
diff --git a/packages/backend/src/graphql/mutations/create-user.ee.js b/packages/backend/src/graphql/mutations/create-user.ee.js
index 2f7d616f..2bd732a1 100644
--- a/packages/backend/src/graphql/mutations/create-user.ee.js
+++ b/packages/backend/src/graphql/mutations/create-user.ee.js
@@ -1,5 +1,5 @@
-import User from '../../models/user';
-import Role from '../../models/role';
+import User from '../../models/user.js';
+import Role from '../../models/role.js';
 
 const createUser = async (_parent, params, context) => {
   context.currentUser.can('create', 'User');
diff --git a/packages/backend/src/graphql/mutations/delete-current-user.ee.js b/packages/backend/src/graphql/mutations/delete-current-user.ee.js
index 8483d407..273b4ce2 100644
--- a/packages/backend/src/graphql/mutations/delete-current-user.ee.js
+++ b/packages/backend/src/graphql/mutations/delete-current-user.ee.js
@@ -1,9 +1,9 @@
 import { Duration } from 'luxon';
-import deleteUserQueue from '../../queues/delete-user.ee';
-import flowQueue from '../../queues/flow';
-import Flow from '../../models/flow';
-import ExecutionStep from '../../models/execution-step';
-import appConfig from '../../config/app';
+import deleteUserQueue from '../../queues/delete-user.ee.js';
+import flowQueue from '../../queues/flow.js';
+import Flow from '../../models/flow.js';
+import ExecutionStep from '../../models/execution-step.js';
+import appConfig from '../../config/app.js';
 
 const deleteCurrentUser = async (_parent, params, context) => {
   const id = context.currentUser.id;
diff --git a/packages/backend/src/graphql/mutations/delete-flow.js b/packages/backend/src/graphql/mutations/delete-flow.js
index 1a122df7..484e09c9 100644
--- a/packages/backend/src/graphql/mutations/delete-flow.js
+++ b/packages/backend/src/graphql/mutations/delete-flow.js
@@ -1,7 +1,7 @@
-import Flow from '../../models/flow';
-import ExecutionStep from '../../models/execution-step';
-import globalVariable from '../../helpers/global-variable';
-import logger from '../../helpers/logger';
+import Flow from '../../models/flow.js';
+import ExecutionStep from '../../models/execution-step.js';
+import globalVariable from '../../helpers/global-variable.js';
+import logger from '../../helpers/logger.js';
 
 const deleteFlow = async (_parent, params, context) => {
   const conditions = context.currentUser.can('delete', 'Flow');
diff --git a/packages/backend/src/graphql/mutations/delete-role.ee.js b/packages/backend/src/graphql/mutations/delete-role.ee.js
index f653df43..9b0249a2 100644
--- a/packages/backend/src/graphql/mutations/delete-role.ee.js
+++ b/packages/backend/src/graphql/mutations/delete-role.ee.js
@@ -1,5 +1,5 @@
-import Role from '../../models/role';
-import SamlAuthProvider from '../../models/saml-auth-provider.ee';
+import Role from '../../models/role.js';
+import SamlAuthProvider from '../../models/saml-auth-provider.ee.js';
 
 const deleteRole = async (_parent, params, context) => {
   context.currentUser.can('delete', 'Role');
diff --git a/packages/backend/src/graphql/mutations/delete-user.ee.js b/packages/backend/src/graphql/mutations/delete-user.ee.js
index cd83eacb..7b66dd05 100644
--- a/packages/backend/src/graphql/mutations/delete-user.ee.js
+++ b/packages/backend/src/graphql/mutations/delete-user.ee.js
@@ -1,6 +1,6 @@
 import { Duration } from 'luxon';
-import User from '../../models/user';
-import deleteUserQueue from '../../queues/delete-user.ee';
+import User from '../../models/user.js';
+import deleteUserQueue from '../../queues/delete-user.ee.js';
 
 const deleteUser = async (_parent, params, context) => {
   context.currentUser.can('delete', 'User');
diff --git a/packages/backend/src/graphql/mutations/execute-flow.js b/packages/backend/src/graphql/mutations/execute-flow.js
index a7d9c327..501b723b 100644
--- a/packages/backend/src/graphql/mutations/execute-flow.js
+++ b/packages/backend/src/graphql/mutations/execute-flow.js
@@ -1,5 +1,5 @@
-import testRun from '../../services/test-run';
-import Step from '../../models/step';
+import testRun from '../../services/test-run.js';
+import Step from '../../models/step.js';
 
 const executeFlow = async (_parent, params, context) => {
   const conditions = context.currentUser.can('update', 'Flow');
diff --git a/packages/backend/src/graphql/mutations/forgot-password.ee.js b/packages/backend/src/graphql/mutations/forgot-password.ee.js
index 94e6b5ee..da5446d9 100644
--- a/packages/backend/src/graphql/mutations/forgot-password.ee.js
+++ b/packages/backend/src/graphql/mutations/forgot-password.ee.js
@@ -1,10 +1,10 @@
-import appConfig from '../../config/app';
-import User from '../../models/user';
-import emailQueue from '../../queues/email';
+import appConfig from '../../config/app.js';
+import User from '../../models/user.js';
+import emailQueue from '../../queues/email.js';
 import {
   REMOVE_AFTER_30_DAYS_OR_150_JOBS,
   REMOVE_AFTER_7_DAYS_OR_50_JOBS,
-} from '../../helpers/remove-job-configuration';
+} from '../../helpers/remove-job-configuration.js';
 
 const forgotPassword = async (_parent, params) => {
   const { email } = params.input;
diff --git a/packages/backend/src/graphql/mutations/generate-auth-url.js b/packages/backend/src/graphql/mutations/generate-auth-url.js
index 60d0581c..c3fe5594 100644
--- a/packages/backend/src/graphql/mutations/generate-auth-url.js
+++ b/packages/backend/src/graphql/mutations/generate-auth-url.js
@@ -1,5 +1,5 @@
-import globalVariable from '../../helpers/global-variable';
-import App from '../../models/app';
+import globalVariable from '../../helpers/global-variable.js';
+import App from '../../models/app.js';
 
 const generateAuthUrl = async (_parent, params, context) => {
   context.currentUser.can('create', 'Connection');
diff --git a/packages/backend/src/graphql/mutations/login.js b/packages/backend/src/graphql/mutations/login.js
index a00d5af8..de9d036d 100644
--- a/packages/backend/src/graphql/mutations/login.js
+++ b/packages/backend/src/graphql/mutations/login.js
@@ -1,5 +1,5 @@
-import User from '../../models/user';
-import createAuthTokenByUserId from '../../helpers/create-auth-token-by-user-id';
+import User from '../../models/user.js';
+import createAuthTokenByUserId from '../../helpers/create-auth-token-by-user-id.js';
 
 const login = async (_parent, params) => {
   const user = await User.query().findOne({
diff --git a/packages/backend/src/graphql/mutations/register-user.ee.js b/packages/backend/src/graphql/mutations/register-user.ee.js
index 860258f0..c24d1922 100644
--- a/packages/backend/src/graphql/mutations/register-user.ee.js
+++ b/packages/backend/src/graphql/mutations/register-user.ee.js
@@ -1,5 +1,5 @@
-import User from '../../models/user';
-import Role from '../../models/role';
+import User from '../../models/user.js';
+import Role from '../../models/role.js';
 
 const registerUser = async (_parent, params) => {
   const { fullName, email, password } = params.input;
diff --git a/packages/backend/src/graphql/mutations/reset-password.ee.js b/packages/backend/src/graphql/mutations/reset-password.ee.js
index 15177b17..309b006a 100644
--- a/packages/backend/src/graphql/mutations/reset-password.ee.js
+++ b/packages/backend/src/graphql/mutations/reset-password.ee.js
@@ -1,4 +1,4 @@
-import User from '../../models/user';
+import User from '../../models/user.js';
 
 const resetPassword = async (_parent, params) => {
   const { token, password } = params.input;
diff --git a/packages/backend/src/graphql/mutations/update-app-auth-client.ee.js b/packages/backend/src/graphql/mutations/update-app-auth-client.ee.js
index b373a282..bbd0380c 100644
--- a/packages/backend/src/graphql/mutations/update-app-auth-client.ee.js
+++ b/packages/backend/src/graphql/mutations/update-app-auth-client.ee.js
@@ -1,4 +1,4 @@
-import AppAuthClient from '../../models/app-auth-client';
+import AppAuthClient from '../../models/app-auth-client.js';
 
 const updateAppAuthClient = async (_parent, params, context) => {
   context.currentUser.can('update', 'App');
diff --git a/packages/backend/src/graphql/mutations/update-app-config.ee.js b/packages/backend/src/graphql/mutations/update-app-config.ee.js
index ce95cc5d..1187aee7 100644
--- a/packages/backend/src/graphql/mutations/update-app-config.ee.js
+++ b/packages/backend/src/graphql/mutations/update-app-config.ee.js
@@ -1,4 +1,4 @@
-import AppConfig from '../../models/app-config';
+import AppConfig from '../../models/app-config.js';
 
 const updateAppConfig = async (_parent, params, context) => {
   context.currentUser.can('update', 'App');
diff --git a/packages/backend/src/graphql/mutations/update-config.ee.js b/packages/backend/src/graphql/mutations/update-config.ee.js
index 02371f89..ad216d64 100644
--- a/packages/backend/src/graphql/mutations/update-config.ee.js
+++ b/packages/backend/src/graphql/mutations/update-config.ee.js
@@ -1,4 +1,4 @@
-import Config from '../../models/config';
+import Config from '../../models/config.js';
 
 const updateConfig = async (_parent, params, context) => {
   context.currentUser.can('update', 'Config');
diff --git a/packages/backend/src/graphql/mutations/update-connection.js b/packages/backend/src/graphql/mutations/update-connection.js
index 49e81f05..bc8cdc58 100644
--- a/packages/backend/src/graphql/mutations/update-connection.js
+++ b/packages/backend/src/graphql/mutations/update-connection.js
@@ -1,4 +1,4 @@
-import AppAuthClient from '../../models/app-auth-client';
+import AppAuthClient from '../../models/app-auth-client.js';
 
 const updateConnection = async (_parent, params, context) => {
   context.currentUser.can('create', 'Connection');
diff --git a/packages/backend/src/graphql/mutations/update-flow-status.js b/packages/backend/src/graphql/mutations/update-flow-status.js
index f94fca0b..169996f2 100644
--- a/packages/backend/src/graphql/mutations/update-flow-status.js
+++ b/packages/backend/src/graphql/mutations/update-flow-status.js
@@ -1,10 +1,10 @@
-import Flow from '../../models/flow';
-import flowQueue from '../../queues/flow';
+import Flow from '../../models/flow.js';
+import flowQueue from '../../queues/flow.js';
 import {
   REMOVE_AFTER_30_DAYS_OR_150_JOBS,
   REMOVE_AFTER_7_DAYS_OR_50_JOBS,
-} from '../../helpers/remove-job-configuration';
-import globalVariable from '../../helpers/global-variable';
+} from '../../helpers/remove-job-configuration.js';
+import globalVariable from '../../helpers/global-variable.js';
 
 const JOB_NAME = 'flow';
 const EVERY_15_MINUTES_CRON = '*/15 * * * *';
diff --git a/packages/backend/src/graphql/mutations/update-role.ee.js b/packages/backend/src/graphql/mutations/update-role.ee.js
index 5d00456a..2566dc40 100644
--- a/packages/backend/src/graphql/mutations/update-role.ee.js
+++ b/packages/backend/src/graphql/mutations/update-role.ee.js
@@ -1,6 +1,6 @@
-import Role from '../../models/role';
-import Permission from '../../models/permission';
-import permissionCatalog from '../../helpers/permission-catalog.ee';
+import Role from '../../models/role.js';
+import Permission from '../../models/permission.js';
+import permissionCatalog from '../../helpers/permission-catalog.ee.js';
 
 const updateRole = async (_parent, params, context) => {
   context.currentUser.can('update', 'Role');
diff --git a/packages/backend/src/graphql/mutations/update-step.js b/packages/backend/src/graphql/mutations/update-step.js
index 061ffebf..3d87bb53 100644
--- a/packages/backend/src/graphql/mutations/update-step.js
+++ b/packages/backend/src/graphql/mutations/update-step.js
@@ -1,6 +1,6 @@
-import App from '../../models/app';
-import Step from '../../models/step';
-import Connection from '../../models/connection';
+import App from '../../models/app.js';
+import Step from '../../models/step.js';
+import Connection from '../../models/connection.js';
 
 const updateStep = async (_parent, params, context) => {
   const { isCreator } = context.currentUser.can('update', 'Flow');
diff --git a/packages/backend/src/graphql/mutations/update-user.ee.js b/packages/backend/src/graphql/mutations/update-user.ee.js
index a2417a7c..0e27eedb 100644
--- a/packages/backend/src/graphql/mutations/update-user.ee.js
+++ b/packages/backend/src/graphql/mutations/update-user.ee.js
@@ -1,4 +1,4 @@
-import User from '../../models/user';
+import User from '../../models/user.js';
 
 const updateUser = async (_parent, params, context) => {
   context.currentUser.can('update', 'User');
diff --git a/packages/backend/src/graphql/mutations/upsert-saml-auth-provider.ee.js b/packages/backend/src/graphql/mutations/upsert-saml-auth-provider.ee.js
index 0d2b3a69..382945b4 100644
--- a/packages/backend/src/graphql/mutations/upsert-saml-auth-provider.ee.js
+++ b/packages/backend/src/graphql/mutations/upsert-saml-auth-provider.ee.js
@@ -1,4 +1,4 @@
-import SamlAuthProvider from '../../models/saml-auth-provider.ee';
+import SamlAuthProvider from '../../models/saml-auth-provider.ee.js';
 
 const upsertSamlAuthProvider = async (_parent, params, context) => {
   context.currentUser.can('create', 'SamlAuthProvider');
diff --git a/packages/backend/src/graphql/mutations/upsert-saml-auth-providers-role-mappings.ee.js b/packages/backend/src/graphql/mutations/upsert-saml-auth-providers-role-mappings.ee.js
index 18030dda..0040d48e 100644
--- a/packages/backend/src/graphql/mutations/upsert-saml-auth-providers-role-mappings.ee.js
+++ b/packages/backend/src/graphql/mutations/upsert-saml-auth-providers-role-mappings.ee.js
@@ -1,6 +1,6 @@
-import SamlAuthProvider from '../../models/saml-auth-provider.ee';
-import SamlAuthProvidersRoleMapping from '../../models/saml-auth-providers-role-mapping.ee';
-import isEmpty from 'lodash/isEmpty';
+import SamlAuthProvider from '../../models/saml-auth-provider.ee.js';
+import SamlAuthProvidersRoleMapping from '../../models/saml-auth-providers-role-mapping.ee.js';
+import isEmpty from 'lodash/isEmpty.js';
 
 const upsertSamlAuthProvidersRoleMappings = async (
   _parent,
diff --git a/packages/backend/src/graphql/mutations/verify-connection.js b/packages/backend/src/graphql/mutations/verify-connection.js
index f15e1844..fdd95764 100644
--- a/packages/backend/src/graphql/mutations/verify-connection.js
+++ b/packages/backend/src/graphql/mutations/verify-connection.js
@@ -1,5 +1,5 @@
-import App from '../../models/app';
-import globalVariable from '../../helpers/global-variable';
+import App from '../../models/app.js';
+import globalVariable from '../../helpers/global-variable.js';
 
 const verifyConnection = async (_parent, params, context) => {
   context.currentUser.can('create', 'Connection');
diff --git a/packages/backend/src/graphql/queries/get-app-auth-client.ee.js b/packages/backend/src/graphql/queries/get-app-auth-client.ee.js
index b88fd782..7ddf6328 100644
--- a/packages/backend/src/graphql/queries/get-app-auth-client.ee.js
+++ b/packages/backend/src/graphql/queries/get-app-auth-client.ee.js
@@ -1,4 +1,4 @@
-import AppAuthClient from '../../models/app-auth-client';
+import AppAuthClient from '../../models/app-auth-client.js';
 
 const getAppAuthClient = async (_parent, params, context) => {
   let canSeeAllClients = false;
diff --git a/packages/backend/src/graphql/queries/get-app-auth-clients.ee.js b/packages/backend/src/graphql/queries/get-app-auth-clients.ee.js
index a9123fbf..544aaa7e 100644
--- a/packages/backend/src/graphql/queries/get-app-auth-clients.ee.js
+++ b/packages/backend/src/graphql/queries/get-app-auth-clients.ee.js
@@ -1,4 +1,4 @@
-import AppConfig from '../../models/app-config';
+import AppConfig from '../../models/app-config.js';
 
 const getAppAuthClients = async (_parent, params, context) => {
   let canSeeAllClients = false;
diff --git a/packages/backend/src/graphql/queries/get-app-config.ee.js b/packages/backend/src/graphql/queries/get-app-config.ee.js
index b759ae8b..513191f5 100644
--- a/packages/backend/src/graphql/queries/get-app-config.ee.js
+++ b/packages/backend/src/graphql/queries/get-app-config.ee.js
@@ -1,4 +1,4 @@
-import AppConfig from '../../models/app-config';
+import AppConfig from '../../models/app-config.js';
 
 const getAppConfig = async (_parent, params, context) => {
   context.currentUser.can('create', 'Connection');
diff --git a/packages/backend/src/graphql/queries/get-app.js b/packages/backend/src/graphql/queries/get-app.js
index 14139670..0f9dd4b5 100644
--- a/packages/backend/src/graphql/queries/get-app.js
+++ b/packages/backend/src/graphql/queries/get-app.js
@@ -1,5 +1,5 @@
-import App from '../../models/app';
-import Connection from '../../models/connection';
+import App from '../../models/app.js';
+import Connection from '../../models/connection.js';
 
 const getApp = async (_parent, params, context) => {
   const conditions = context.currentUser.can('read', 'Connection');
diff --git a/packages/backend/src/graphql/queries/get-apps.js b/packages/backend/src/graphql/queries/get-apps.js
index 6ba0dd3f..2c3a78a0 100644
--- a/packages/backend/src/graphql/queries/get-apps.js
+++ b/packages/backend/src/graphql/queries/get-apps.js
@@ -1,4 +1,4 @@
-import App from '../../models/app';
+import App from '../../models/app.js';
 
 const getApps = async (_parent, params) => {
   const apps = await App.findAll(params.name);
diff --git a/packages/backend/src/graphql/queries/get-automatisch-info.js b/packages/backend/src/graphql/queries/get-automatisch-info.js
index dd89d273..63d444a2 100644
--- a/packages/backend/src/graphql/queries/get-automatisch-info.js
+++ b/packages/backend/src/graphql/queries/get-automatisch-info.js
@@ -1,5 +1,5 @@
-import appConfig from '../../config/app';
-import { getLicense } from '../../helpers/license.ee';
+import appConfig from '../../config/app.js';
+import { getLicense } from '../../helpers/license.ee.js';
 
 const getAutomatischInfo = async () => {
   const license = await getLicense();
diff --git a/packages/backend/src/graphql/queries/get-billing-and-usage.ee.js b/packages/backend/src/graphql/queries/get-billing-and-usage.ee.js
index ccc63df6..d23a44e5 100644
--- a/packages/backend/src/graphql/queries/get-billing-and-usage.ee.js
+++ b/packages/backend/src/graphql/queries/get-billing-and-usage.ee.js
@@ -1,6 +1,6 @@
 import { DateTime } from 'luxon';
-import Billing from '../../helpers/billing/index.ee';
-import ExecutionStep from '../../models/execution-step';
+import Billing from '../../helpers/billing/index.ee.js';
+import ExecutionStep from '../../models/execution-step.js';
 
 const getBillingAndUsage = async (_parent, _params, context) => {
   const persistedSubscription = await context.currentUser.$relatedQuery(
diff --git a/packages/backend/src/graphql/queries/get-config.ee.js b/packages/backend/src/graphql/queries/get-config.ee.js
index f1cad6ce..4844be88 100644
--- a/packages/backend/src/graphql/queries/get-config.ee.js
+++ b/packages/backend/src/graphql/queries/get-config.ee.js
@@ -1,5 +1,5 @@
-import { hasValidLicense } from '../../helpers/license.ee';
-import Config from '../../models/config';
+import { hasValidLicense } from '../../helpers/license.ee.js';
+import Config from '../../models/config.js';
 
 const getConfig = async (_parent, params) => {
   if (!(await hasValidLicense())) return {};
diff --git a/packages/backend/src/graphql/queries/get-connected-apps.js b/packages/backend/src/graphql/queries/get-connected-apps.js
index 32235ca7..3826c746 100644
--- a/packages/backend/src/graphql/queries/get-connected-apps.js
+++ b/packages/backend/src/graphql/queries/get-connected-apps.js
@@ -1,6 +1,6 @@
-import App from '../../models/app';
-import Flow from '../../models/flow';
-import Connection from '../../models/connection';
+import App from '../../models/app.js';
+import Flow from '../../models/flow.js';
+import Connection from '../../models/connection.js';
 
 const getConnectedApps = async (_parent, params, context) => {
   const conditions = context.currentUser.can('read', 'Connection');
diff --git a/packages/backend/src/graphql/queries/get-dynamic-data.js b/packages/backend/src/graphql/queries/get-dynamic-data.js
index 29f89bfe..731b7d5d 100644
--- a/packages/backend/src/graphql/queries/get-dynamic-data.js
+++ b/packages/backend/src/graphql/queries/get-dynamic-data.js
@@ -1,8 +1,8 @@
-import App from '../../models/app';
-import Step from '../../models/step';
-import ExecutionStep from '../../models/execution-step';
-import globalVariable from '../../helpers/global-variable';
-import computeParameters from '../../helpers/compute-parameters';
+import App from '../../models/app.js';
+import Step from '../../models/step.js';
+import ExecutionStep from '../../models/execution-step.js';
+import globalVariable from '../../helpers/global-variable.js';
+import computeParameters from '../../helpers/compute-parameters.js';
 
 const getDynamicData = async (_parent, params, context) => {
   const conditions = context.currentUser.can('update', 'Flow');
diff --git a/packages/backend/src/graphql/queries/get-dynamic-fields.js b/packages/backend/src/graphql/queries/get-dynamic-fields.js
index c3571cf1..2d7d18db 100644
--- a/packages/backend/src/graphql/queries/get-dynamic-fields.js
+++ b/packages/backend/src/graphql/queries/get-dynamic-fields.js
@@ -1,6 +1,6 @@
-import App from '../../models/app';
-import Step from '../../models/step';
-import globalVariable from '../../helpers/global-variable';
+import App from '../../models/app.js';
+import Step from '../../models/step.js';
+import globalVariable from '../../helpers/global-variable.js';
 
 const getDynamicFields = async (_parent, params, context) => {
   const conditions = context.currentUser.can('update', 'Flow');
diff --git a/packages/backend/src/graphql/queries/get-execution-steps.js b/packages/backend/src/graphql/queries/get-execution-steps.js
index a69c8e2c..61eab6ac 100644
--- a/packages/backend/src/graphql/queries/get-execution-steps.js
+++ b/packages/backend/src/graphql/queries/get-execution-steps.js
@@ -1,5 +1,5 @@
-import paginate from '../../helpers/pagination';
-import Execution from '../../models/execution';
+import paginate from '../../helpers/pagination.js';
+import Execution from '../../models/execution.js';
 
 const getExecutionSteps = async (_parent, params, context) => {
   const conditions = context.currentUser.can('read', 'Execution');
diff --git a/packages/backend/src/graphql/queries/get-execution.js b/packages/backend/src/graphql/queries/get-execution.js
index b14409c0..37659ffb 100644
--- a/packages/backend/src/graphql/queries/get-execution.js
+++ b/packages/backend/src/graphql/queries/get-execution.js
@@ -1,4 +1,4 @@
-import Execution from '../../models/execution';
+import Execution from '../../models/execution.js';
 
 const getExecution = async (_parent, params, context) => {
   const conditions = context.currentUser.can('read', 'Execution');
diff --git a/packages/backend/src/graphql/queries/get-executions.js b/packages/backend/src/graphql/queries/get-executions.js
index 20ca0cec..d19e6420 100644
--- a/packages/backend/src/graphql/queries/get-executions.js
+++ b/packages/backend/src/graphql/queries/get-executions.js
@@ -1,7 +1,7 @@
 import { raw } from 'objection';
 import { DateTime } from 'luxon';
-import Execution from '../../models/execution';
-import paginate from '../../helpers/pagination';
+import Execution from '../../models/execution.js';
+import paginate from '../../helpers/pagination.js';
 
 const getExecutions = async (_parent, params, context) => {
   const conditions = context.currentUser.can('read', 'Execution');
diff --git a/packages/backend/src/graphql/queries/get-flow.js b/packages/backend/src/graphql/queries/get-flow.js
index 935f852a..3c1b750b 100644
--- a/packages/backend/src/graphql/queries/get-flow.js
+++ b/packages/backend/src/graphql/queries/get-flow.js
@@ -1,4 +1,4 @@
-import Flow from '../../models/flow';
+import Flow from '../../models/flow.js';
 
 const getFlow = async (_parent, params, context) => {
   const conditions = context.currentUser.can('read', 'Flow');
diff --git a/packages/backend/src/graphql/queries/get-flows.js b/packages/backend/src/graphql/queries/get-flows.js
index 66c120f2..6f3899e8 100644
--- a/packages/backend/src/graphql/queries/get-flows.js
+++ b/packages/backend/src/graphql/queries/get-flows.js
@@ -1,5 +1,5 @@
-import Flow from '../../models/flow';
-import paginate from '../../helpers/pagination';
+import Flow from '../../models/flow.js';
+import paginate from '../../helpers/pagination.js';
 
 const getFlows = async (_parent, params, context) => {
   const conditions = context.currentUser.can('read', 'Flow');
diff --git a/packages/backend/src/graphql/queries/get-invoices.ee.js b/packages/backend/src/graphql/queries/get-invoices.ee.js
index 9183f62d..afb7d031 100644
--- a/packages/backend/src/graphql/queries/get-invoices.ee.js
+++ b/packages/backend/src/graphql/queries/get-invoices.ee.js
@@ -1,4 +1,4 @@
-import Billing from '../../helpers/billing/index.ee';
+import Billing from '../../helpers/billing/index.ee.js';
 
 const getInvoices = async (_parent, _params, context) => {
   const subscription = await context.currentUser.$relatedQuery(
diff --git a/packages/backend/src/graphql/queries/get-notifications.js b/packages/backend/src/graphql/queries/get-notifications.js
index 39da69b1..c36eb442 100644
--- a/packages/backend/src/graphql/queries/get-notifications.js
+++ b/packages/backend/src/graphql/queries/get-notifications.js
@@ -1,6 +1,7 @@
-import axios from '../../helpers/axios-with-proxy';
+import axios from '../../helpers/axios-with-proxy.js';
 
-const NOTIFICATIONS_URL = 'https://notifications.automatisch.io/notifications.json';
+const NOTIFICATIONS_URL =
+  'https://notifications.automatisch.io/notifications.json';
 
 const getNotifications = async () => {
   try {
diff --git a/packages/backend/src/graphql/queries/get-paddle-info.ee.js b/packages/backend/src/graphql/queries/get-paddle-info.ee.js
index 35fc3c64..a07df777 100644
--- a/packages/backend/src/graphql/queries/get-paddle-info.ee.js
+++ b/packages/backend/src/graphql/queries/get-paddle-info.ee.js
@@ -1,5 +1,5 @@
-import appConfig from '../../config/app';
-import Billing from '../../helpers/billing/index.ee';
+import appConfig from '../../config/app.js';
+import Billing from '../../helpers/billing/index.ee.js';
 
 const getPaddleInfo = async () => {
   if (!appConfig.isCloud) return;
diff --git a/packages/backend/src/graphql/queries/get-payment-plans.ee.js b/packages/backend/src/graphql/queries/get-payment-plans.ee.js
index 47fa7d91..49c4f7e2 100644
--- a/packages/backend/src/graphql/queries/get-payment-plans.ee.js
+++ b/packages/backend/src/graphql/queries/get-payment-plans.ee.js
@@ -1,5 +1,5 @@
-import appConfig from '../../config/app';
-import Billing from '../../helpers/billing/index.ee';
+import appConfig from '../../config/app.js';
+import Billing from '../../helpers/billing/index.ee.js';
 
 const getPaymentPlans = async () => {
   if (!appConfig.isCloud) return;
diff --git a/packages/backend/src/graphql/queries/get-permission-catalog.ee.js b/packages/backend/src/graphql/queries/get-permission-catalog.ee.js
index 92f8cdc6..b902315b 100644
--- a/packages/backend/src/graphql/queries/get-permission-catalog.ee.js
+++ b/packages/backend/src/graphql/queries/get-permission-catalog.ee.js
@@ -1,4 +1,4 @@
-import permissionCatalog from '../../helpers/permission-catalog.ee';
+import permissionCatalog from '../../helpers/permission-catalog.ee.js';
 
 const getPermissionCatalog = async () => {
   return permissionCatalog;
diff --git a/packages/backend/src/graphql/queries/get-role.ee.js b/packages/backend/src/graphql/queries/get-role.ee.js
index 23db99dc..906535b3 100644
--- a/packages/backend/src/graphql/queries/get-role.ee.js
+++ b/packages/backend/src/graphql/queries/get-role.ee.js
@@ -1,4 +1,4 @@
-import Role from '../../models/role';
+import Role from '../../models/role.js';
 
 const getRole = async (_parent, params, context) => {
   context.currentUser.can('read', 'Role');
diff --git a/packages/backend/src/graphql/queries/get-roles.ee.js b/packages/backend/src/graphql/queries/get-roles.ee.js
index 4c5cc25f..900af081 100644
--- a/packages/backend/src/graphql/queries/get-roles.ee.js
+++ b/packages/backend/src/graphql/queries/get-roles.ee.js
@@ -1,4 +1,4 @@
-import Role from '../../models/role';
+import Role from '../../models/role.js';
 
 const getRoles = async (_parent, params, context) => {
   context.currentUser.can('read', 'Role');
diff --git a/packages/backend/src/graphql/queries/get-saml-auth-provider-role-mappings.ee.js b/packages/backend/src/graphql/queries/get-saml-auth-provider-role-mappings.ee.js
index e339d88d..b6e4246e 100644
--- a/packages/backend/src/graphql/queries/get-saml-auth-provider-role-mappings.ee.js
+++ b/packages/backend/src/graphql/queries/get-saml-auth-provider-role-mappings.ee.js
@@ -1,4 +1,4 @@
-import SamlAuthProvider from '../../models/saml-auth-provider.ee';
+import SamlAuthProvider from '../../models/saml-auth-provider.ee.js';
 
 const getSamlAuthProviderRoleMappings = async (_parent, params, context) => {
   context.currentUser.can('read', 'SamlAuthProvider');
diff --git a/packages/backend/src/graphql/queries/get-saml-auth-provider.ee.js b/packages/backend/src/graphql/queries/get-saml-auth-provider.ee.js
index b12353c2..b95233b8 100644
--- a/packages/backend/src/graphql/queries/get-saml-auth-provider.ee.js
+++ b/packages/backend/src/graphql/queries/get-saml-auth-provider.ee.js
@@ -1,4 +1,4 @@
-import SamlAuthProvider from '../../models/saml-auth-provider.ee';
+import SamlAuthProvider from '../../models/saml-auth-provider.ee.js';
 
 const getSamlAuthProvider = async (_parent, params, context) => {
   context.currentUser.can('read', 'SamlAuthProvider');
diff --git a/packages/backend/src/graphql/queries/get-step-with-test-executions.js b/packages/backend/src/graphql/queries/get-step-with-test-executions.js
index 21462594..5ec088b0 100644
--- a/packages/backend/src/graphql/queries/get-step-with-test-executions.js
+++ b/packages/backend/src/graphql/queries/get-step-with-test-executions.js
@@ -1,6 +1,6 @@
 import { ref } from 'objection';
-import ExecutionStep from '../../models/execution-step';
-import Step from '../../models/step';
+import ExecutionStep from '../../models/execution-step.js';
+import Step from '../../models/step.js';
 
 const getStepWithTestExecutions = async (_parent, params, context) => {
   const conditions = context.currentUser.can('update', 'Flow');
diff --git a/packages/backend/src/graphql/queries/get-subscription-status.ee.js b/packages/backend/src/graphql/queries/get-subscription-status.ee.js
index b8669456..28df51eb 100644
--- a/packages/backend/src/graphql/queries/get-subscription-status.ee.js
+++ b/packages/backend/src/graphql/queries/get-subscription-status.ee.js
@@ -1,4 +1,4 @@
-import appConfig from '../../config/app';
+import appConfig from '../../config/app.js';
 
 const getSubscriptionStatus = async (_parent, _params, context) => {
   if (!appConfig.isCloud) return;
diff --git a/packages/backend/src/graphql/queries/get-trial-status.ee.js b/packages/backend/src/graphql/queries/get-trial-status.ee.js
index d824ef94..1980ccb7 100644
--- a/packages/backend/src/graphql/queries/get-trial-status.ee.js
+++ b/packages/backend/src/graphql/queries/get-trial-status.ee.js
@@ -1,4 +1,4 @@
-import appConfig from '../../config/app';
+import appConfig from '../../config/app.js';
 
 const getTrialStatus = async (_parent, _params, context) => {
   if (!appConfig.isCloud) return;
diff --git a/packages/backend/src/graphql/queries/get-user.js b/packages/backend/src/graphql/queries/get-user.js
index 77389e2c..61b0e753 100644
--- a/packages/backend/src/graphql/queries/get-user.js
+++ b/packages/backend/src/graphql/queries/get-user.js
@@ -1,4 +1,4 @@
-import User from '../../models/user';
+import User from '../../models/user.js';
 
 const getUser = async (_parent, params, context) => {
   context.currentUser.can('read', 'User');
diff --git a/packages/backend/src/graphql/queries/get-users.js b/packages/backend/src/graphql/queries/get-users.js
index a16722ba..6bff6c29 100644
--- a/packages/backend/src/graphql/queries/get-users.js
+++ b/packages/backend/src/graphql/queries/get-users.js
@@ -1,5 +1,5 @@
-import paginate from '../../helpers/pagination';
-import User from '../../models/user';
+import paginate from '../../helpers/pagination.js';
+import User from '../../models/user.js';
 
 const getUsers = async (_parent, params, context) => {
   context.currentUser.can('read', 'User');
diff --git a/packages/backend/src/graphql/queries/healthcheck.js b/packages/backend/src/graphql/queries/healthcheck.js
index e4126d08..68bbeea0 100644
--- a/packages/backend/src/graphql/queries/healthcheck.js
+++ b/packages/backend/src/graphql/queries/healthcheck.js
@@ -1,4 +1,4 @@
-import appConfig from '../../config/app';
+import appConfig from '../../config/app.js';
 
 const healthcheck = () => {
   return {
diff --git a/packages/backend/src/graphql/queries/list-saml-auth-providers.ee.js b/packages/backend/src/graphql/queries/list-saml-auth-providers.ee.js
index 313dd8e4..1e2ee21e 100644
--- a/packages/backend/src/graphql/queries/list-saml-auth-providers.ee.js
+++ b/packages/backend/src/graphql/queries/list-saml-auth-providers.ee.js
@@ -1,4 +1,4 @@
-import SamlAuthProvider from '../../models/saml-auth-provider.ee';
+import SamlAuthProvider from '../../models/saml-auth-provider.ee.js';
 
 const listSamlAuthProviders = async () => {
   const providers = await SamlAuthProvider.query().where({ active: true });
diff --git a/packages/backend/src/graphql/queries/test-connection.js b/packages/backend/src/graphql/queries/test-connection.js
index 8d4efb08..6d8e3489 100644
--- a/packages/backend/src/graphql/queries/test-connection.js
+++ b/packages/backend/src/graphql/queries/test-connection.js
@@ -1,6 +1,6 @@
-import App from '../../models/app';
-import Connection from '../../models/connection';
-import globalVariable from '../../helpers/global-variable';
+import App from '../../models/app.js';
+import Connection from '../../models/connection.js';
+import globalVariable from '../../helpers/global-variable.js';
 
 const testConnection = async (_parent, params, context) => {
   const conditions = context.currentUser.can('update', 'Connection');
diff --git a/packages/backend/src/graphql/query-resolvers.js b/packages/backend/src/graphql/query-resolvers.js
index 20bb6bcb..f4bf2916 100644
--- a/packages/backend/src/graphql/query-resolvers.js
+++ b/packages/backend/src/graphql/query-resolvers.js
@@ -1,37 +1,37 @@
-import getApp from './queries/get-app';
-import getAppAuthClient from './queries/get-app-auth-client.ee';
-import getAppAuthClients from './queries/get-app-auth-clients.ee';
-import getAppConfig from './queries/get-app-config.ee';
-import getApps from './queries/get-apps';
-import getAutomatischInfo from './queries/get-automatisch-info';
-import getBillingAndUsage from './queries/get-billing-and-usage.ee';
-import getConfig from './queries/get-config.ee';
-import getConnectedApps from './queries/get-connected-apps';
-import getCurrentUser from './queries/get-current-user';
-import getDynamicData from './queries/get-dynamic-data';
-import getDynamicFields from './queries/get-dynamic-fields';
-import getExecution from './queries/get-execution';
-import getExecutionSteps from './queries/get-execution-steps';
-import getExecutions from './queries/get-executions';
-import getFlow from './queries/get-flow';
-import getFlows from './queries/get-flows';
-import getInvoices from './queries/get-invoices.ee';
-import getNotifications from './queries/get-notifications';
-import getPaddleInfo from './queries/get-paddle-info.ee';
-import getPaymentPlans from './queries/get-payment-plans.ee';
-import getPermissionCatalog from './queries/get-permission-catalog.ee';
-import getRole from './queries/get-role.ee';
-import getRoles from './queries/get-roles.ee';
-import getSamlAuthProviderRoleMappings from './queries/get-saml-auth-provider-role-mappings.ee';
-import getSamlAuthProvider from './queries/get-saml-auth-provider.ee';
-import getStepWithTestExecutions from './queries/get-step-with-test-executions';
-import getSubscriptionStatus from './queries/get-subscription-status.ee';
-import getTrialStatus from './queries/get-trial-status.ee';
-import getUser from './queries/get-user';
-import getUsers from './queries/get-users';
-import healthcheck from './queries/healthcheck';
-import listSamlAuthProviders from './queries/list-saml-auth-providers.ee';
-import testConnection from './queries/test-connection';
+import getApp from './queries/get-app.js';
+import getAppAuthClient from './queries/get-app-auth-client.ee.js';
+import getAppAuthClients from './queries/get-app-auth-clients.ee.js';
+import getAppConfig from './queries/get-app-config.ee.js';
+import getApps from './queries/get-apps.js';
+import getAutomatischInfo from './queries/get-automatisch-info.js';
+import getBillingAndUsage from './queries/get-billing-and-usage.ee.js';
+import getConfig from './queries/get-config.ee.js';
+import getConnectedApps from './queries/get-connected-apps.js';
+import getCurrentUser from './queries/get-current-user.js';
+import getDynamicData from './queries/get-dynamic-data.js';
+import getDynamicFields from './queries/get-dynamic-fields.js';
+import getExecution from './queries/get-execution.js';
+import getExecutionSteps from './queries/get-execution-steps.js';
+import getExecutions from './queries/get-executions.js';
+import getFlow from './queries/get-flow.js';
+import getFlows from './queries/get-flows.js';
+import getInvoices from './queries/get-invoices.ee.js';
+import getNotifications from './queries/get-notifications.js';
+import getPaddleInfo from './queries/get-paddle-info.ee.js';
+import getPaymentPlans from './queries/get-payment-plans.ee.js';
+import getPermissionCatalog from './queries/get-permission-catalog.ee.js';
+import getRole from './queries/get-role.ee.js';
+import getRoles from './queries/get-roles.ee.js';
+import getSamlAuthProviderRoleMappings from './queries/get-saml-auth-provider-role-mappings.ee.js';
+import getSamlAuthProvider from './queries/get-saml-auth-provider.ee.js';
+import getStepWithTestExecutions from './queries/get-step-with-test-executions.js';
+import getSubscriptionStatus from './queries/get-subscription-status.ee.js';
+import getTrialStatus from './queries/get-trial-status.ee.js';
+import getUser from './queries/get-user.js';
+import getUsers from './queries/get-users.js';
+import healthcheck from './queries/healthcheck.js';
+import listSamlAuthProviders from './queries/list-saml-auth-providers.ee.js';
+import testConnection from './queries/test-connection.js';
 
 const queryResolvers = {
   getApp,
diff --git a/packages/backend/src/graphql/resolvers.js b/packages/backend/src/graphql/resolvers.js
index 8087332f..344c0416 100644
--- a/packages/backend/src/graphql/resolvers.js
+++ b/packages/backend/src/graphql/resolvers.js
@@ -1,5 +1,5 @@
-import mutationResolvers from './mutation-resolvers';
-import queryResolvers from './query-resolvers';
+import mutationResolvers from './mutation-resolvers.js';
+import queryResolvers from './query-resolvers.js';
 
 const resolvers = {
   Query: queryResolvers,
diff --git a/packages/backend/src/helpers/app-assets-handler.js b/packages/backend/src/helpers/app-assets-handler.js
index f9e9a3fe..778ad25b 100644
--- a/packages/backend/src/helpers/app-assets-handler.js
+++ b/packages/backend/src/helpers/app-assets-handler.js
@@ -1,4 +1,8 @@
 import express from 'express';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
 const appAssetsHandler = async (app) => {
   app.use('/apps/:appKey/assets/favicon.svg', (req, res, next) => {
diff --git a/packages/backend/src/helpers/authentication.js b/packages/backend/src/helpers/authentication.js
index cf4a022c..90b99c35 100644
--- a/packages/backend/src/helpers/authentication.js
+++ b/packages/backend/src/helpers/authentication.js
@@ -1,7 +1,7 @@
 import { allow, rule, shield } from 'graphql-shield';
 import jwt from 'jsonwebtoken';
-import appConfig from '../config/app';
-import User from '../models/user';
+import appConfig from '../config/app.js';
+import User from '../models/user.js';
 
 const isAuthenticated = rule()(async (_parent, _args, req) => {
   const token = req.headers['authorization'];
diff --git a/packages/backend/src/helpers/billing/index.ee.js b/packages/backend/src/helpers/billing/index.ee.js
index 899d28e6..091598af 100644
--- a/packages/backend/src/helpers/billing/index.ee.js
+++ b/packages/backend/src/helpers/billing/index.ee.js
@@ -1,7 +1,7 @@
-import appConfig from '../../config/app';
-import paddleClient from './paddle.ee';
-import paddlePlans from './plans.ee';
-import webhooks from './webhooks.ee';
+import appConfig from '../../config/app.js';
+import paddleClient from './paddle.ee.js';
+import paddlePlans from './plans.ee.js';
+import webhooks from './webhooks.ee.js';
 
 const paddleInfo = {
   sandbox: appConfig.isProd ? false : true,
diff --git a/packages/backend/src/helpers/billing/paddle.ee.js b/packages/backend/src/helpers/billing/paddle.ee.js
index 94d12f60..e4bed3fa 100644
--- a/packages/backend/src/helpers/billing/paddle.ee.js
+++ b/packages/backend/src/helpers/billing/paddle.ee.js
@@ -1,6 +1,6 @@
 // TODO: replace with axios-with-proxy when needed
 import axios from 'axios';
-import appConfig from '../../config/app';
+import appConfig from '../../config/app.js';
 import { DateTime } from 'luxon';
 
 const PADDLE_VENDOR_URL = appConfig.isDev
diff --git a/packages/backend/src/helpers/billing/webhooks.ee.js b/packages/backend/src/helpers/billing/webhooks.ee.js
index 3a98ca61..19cc194c 100644
--- a/packages/backend/src/helpers/billing/webhooks.ee.js
+++ b/packages/backend/src/helpers/billing/webhooks.ee.js
@@ -1,5 +1,5 @@
-import Subscription from '../../models/subscription.ee';
-import Billing from './index.ee';
+import Subscription from '../../models/subscription.ee.js';
+import Billing from './index.ee.js';
 
 const handleSubscriptionCreated = async (request) => {
   const subscription = await Subscription.query().insertAndFetch(
diff --git a/packages/backend/src/helpers/create-auth-token-by-user-id.js b/packages/backend/src/helpers/create-auth-token-by-user-id.js
index b41017c8..d70382d9 100644
--- a/packages/backend/src/helpers/create-auth-token-by-user-id.js
+++ b/packages/backend/src/helpers/create-auth-token-by-user-id.js
@@ -1,5 +1,5 @@
 import jwt from 'jsonwebtoken';
-import appConfig from '../config/app';
+import appConfig from '../config/app.js';
 
 const TOKEN_EXPIRES_IN = '14d';
 
diff --git a/packages/backend/src/helpers/create-bull-board-handler.js b/packages/backend/src/helpers/create-bull-board-handler.js
index 909d28f0..03f949b6 100644
--- a/packages/backend/src/helpers/create-bull-board-handler.js
+++ b/packages/backend/src/helpers/create-bull-board-handler.js
@@ -1,13 +1,13 @@
 import { ExpressAdapter } from '@bull-board/express';
 import { createBullBoard } from '@bull-board/api';
-import { BullMQAdapter } from '@bull-board/api/bullMQAdapter';
-import flowQueue from '../queues/flow';
-import triggerQueue from '../queues/trigger';
-import actionQueue from '../queues/action';
-import emailQueue from '../queues/email';
-import deleteUserQueue from '../queues/delete-user.ee';
-import removeCancelledSubscriptionsQueue from '../queues/remove-cancelled-subscriptions.ee';
-import appConfig from '../config/app';
+import { BullMQAdapter } from '@bull-board/api/bullMQAdapter.js';
+import flowQueue from '../queues/flow.js';
+import triggerQueue from '../queues/trigger.js';
+import actionQueue from '../queues/action.js';
+import emailQueue from '../queues/email.js';
+import deleteUserQueue from '../queues/delete-user.ee.js';
+import removeCancelledSubscriptionsQueue from '../queues/remove-cancelled-subscriptions.ee.js';
+import appConfig from '../config/app.js';
 
 const serverAdapter = new ExpressAdapter();
 
diff --git a/packages/backend/src/helpers/error-handler.js b/packages/backend/src/helpers/error-handler.js
index 910e92e5..c875cb4d 100644
--- a/packages/backend/src/helpers/error-handler.js
+++ b/packages/backend/src/helpers/error-handler.js
@@ -1,4 +1,4 @@
-import logger from './logger';
+import logger from './logger.js';
 
 // Do not remove `next` argument as the function signature will not fit for an error handler middleware
 const errorHandler = (err, req, res, next) => {
diff --git a/packages/backend/src/helpers/find-or-create-user-by-saml-identity.ee.js b/packages/backend/src/helpers/find-or-create-user-by-saml-identity.ee.js
index 368f917e..daeb1206 100644
--- a/packages/backend/src/helpers/find-or-create-user-by-saml-identity.ee.js
+++ b/packages/backend/src/helpers/find-or-create-user-by-saml-identity.ee.js
@@ -1,5 +1,5 @@
-import User from '../models/user';
-import Identity from '../models/identity.ee';
+import User from '../models/user.js';
+import Identity from '../models/identity.ee.js';
 
 const getUser = (user, providerConfig) => ({
   name: user[providerConfig.firstnameAttributeName],
diff --git a/packages/backend/src/helpers/graphql-instance.js b/packages/backend/src/helpers/graphql-instance.js
index c4bf1c1b..a8a50db7 100644
--- a/packages/backend/src/helpers/graphql-instance.js
+++ b/packages/backend/src/helpers/graphql-instance.js
@@ -1,16 +1,19 @@
-import { join } from 'node:path';
+import path, { join } from 'path';
+import { fileURLToPath } from 'url';
 import { graphqlHTTP } from 'express-graphql';
 import { loadSchemaSync } from '@graphql-tools/load';
 import { GraphQLFileLoader } from '@graphql-tools/graphql-file-loader';
 import { addResolversToSchema } from '@graphql-tools/schema';
 import { applyMiddleware } from 'graphql-middleware';
 
-import appConfig from '../config/app';
-import logger from './logger';
-import authentication from './authentication';
-import * as Sentry from './sentry.ee';
-import resolvers from '../graphql/resolvers';
-import HttpError from '../errors/http';
+import appConfig from '../config/app.js';
+import logger from './logger.js';
+import authentication from './authentication.js';
+import * as Sentry from './sentry.ee.js';
+import resolvers from '../graphql/resolvers.js';
+import HttpError from '../errors/http.js';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
 const schema = loadSchemaSync(join(__dirname, '../graphql/schema.graphql'), {
   loaders: [new GraphQLFileLoader()],
@@ -22,7 +25,10 @@ const schemaWithResolvers = addResolversToSchema({
 });
 
 const graphQLInstance = graphqlHTTP({
-  schema: applyMiddleware(schemaWithResolvers, authentication),
+  schema: applyMiddleware(
+    schemaWithResolvers,
+    authentication.generate(schemaWithResolvers)
+  ),
   graphiql: appConfig.isDev,
   customFormatErrorFn: (error) => {
     logger.error(error.path + ' : ' + error.message + '\n' + error.stack);
diff --git a/packages/backend/src/helpers/inject-bull-board-handler.js b/packages/backend/src/helpers/inject-bull-board-handler.js
index c0cd8b25..17266c07 100644
--- a/packages/backend/src/helpers/inject-bull-board-handler.js
+++ b/packages/backend/src/helpers/inject-bull-board-handler.js
@@ -1,5 +1,5 @@
 import basicAuth from 'express-basic-auth';
-import appConfig from '../config/app';
+import appConfig from '../config/app.js';
 
 const injectBullBoardHandler = async (app, serverAdapter) => {
   if (
diff --git a/packages/backend/src/helpers/morgan.js b/packages/backend/src/helpers/morgan.js
index b2144cf3..1afa001f 100644
--- a/packages/backend/src/helpers/morgan.js
+++ b/packages/backend/src/helpers/morgan.js
@@ -1,5 +1,5 @@
 import morgan from 'morgan';
-import logger from './logger';
+import logger from './logger.js';
 
 const stream = {
   write: (message) =>
diff --git a/packages/backend/src/helpers/passport.js b/packages/backend/src/helpers/passport.js
index 122d06de..2e7a1430 100644
--- a/packages/backend/src/helpers/passport.js
+++ b/packages/backend/src/helpers/passport.js
@@ -2,10 +2,10 @@ import { URL } from 'node:url';
 import { MultiSamlStrategy } from '@node-saml/passport-saml';
 import passport from 'passport';
 
-import appConfig from '../config/app';
-import createAuthTokenByUserId from './create-auth-token-by-user-id';
-import SamlAuthProvider from '../models/saml-auth-provider.ee';
-import findOrCreateUserBySamlIdentity from './find-or-create-user-by-saml-identity.ee';
+import appConfig from '../config/app.js';
+import createAuthTokenByUserId from './create-auth-token-by-user-id.js';
+import SamlAuthProvider from '../models/saml-auth-provider.ee.js';
+import findOrCreateUserBySamlIdentity from './find-or-create-user-by-saml-identity.ee.js';
 
 export default function configurePassport(app) {
   app.use(
diff --git a/packages/backend/src/helpers/web-ui-handler.js b/packages/backend/src/helpers/web-ui-handler.js
index 13b9513f..8d82fe16 100644
--- a/packages/backend/src/helpers/web-ui-handler.js
+++ b/packages/backend/src/helpers/web-ui-handler.js
@@ -1,6 +1,6 @@
 import express from 'express';
 import { dirname, join } from 'path';
-import appConfig from '../config/app';
+import appConfig from '../config/app.js';
 
 const webUIHandler = async (app) => {
   if (appConfig.serveWebAppSeparately) return;
diff --git a/packages/backend/src/helpers/webhook-handler.js b/packages/backend/src/helpers/webhook-handler.js
index 9b2f3726..fc39b124 100644
--- a/packages/backend/src/helpers/webhook-handler.js
+++ b/packages/backend/src/helpers/webhook-handler.js
@@ -1,14 +1,14 @@
-import isEmpty from 'lodash/isEmpty';
+import isEmpty from 'lodash/isEmpty.js';
 
-import Flow from '../models/flow';
-import { processTrigger } from '../services/trigger';
-import triggerQueue from '../queues/trigger';
-import globalVariable from './global-variable';
-import QuotaExceededError from '../errors/quote-exceeded';
+import Flow from '../models/flow.js';
+import { processTrigger } from '../services/trigger.js';
+import triggerQueue from '../queues/trigger.js';
+import globalVariable from './global-variable.js';
+import QuotaExceededError from '../errors/quote-exceeded.js';
 import {
   REMOVE_AFTER_30_DAYS_OR_150_JOBS,
   REMOVE_AFTER_7_DAYS_OR_50_JOBS,
-} from './remove-job-configuration';
+} from './remove-job-configuration.js';
 
 export default async (flowId, request, response) => {
   const flow = await Flow.query().findById(flowId).throwIfNotFound();
diff --git a/packages/backend/src/models/app-auth-client.js b/packages/backend/src/models/app-auth-client.js
index 965c9cdd..a2837763 100644
--- a/packages/backend/src/models/app-auth-client.js
+++ b/packages/backend/src/models/app-auth-client.js
@@ -47,7 +47,7 @@ class AppAuthClient extends Base {
     if (!this.eligibleForDecryption()) return;
 
     this.formattedAuthDefaults = JSON.parse(
-      AES.decrypt(this.authDefaults, appConfig.encryptionKey).toString(enc.Utf8)
+      AES.decrypt(this.authDefaults, appConfig.encryptionKey).toString(enc)
     );
   }
 
diff --git a/packages/backend/src/models/config.js b/packages/backend/src/models/config.js
index 303f6d64..949c6aaf 100644
--- a/packages/backend/src/models/config.js
+++ b/packages/backend/src/models/config.js
@@ -1,4 +1,4 @@
-import Base from './base';
+import Base from './base.js';
 
 class Config extends Base {
   static tableName = 'config';
diff --git a/packages/backend/src/models/connection.js b/packages/backend/src/models/connection.js
index fb2bfeff..e79735d2 100644
--- a/packages/backend/src/models/connection.js
+++ b/packages/backend/src/models/connection.js
@@ -109,7 +109,7 @@ class Connection extends Base {
     if (!this.eligibleForDecryption()) return;
 
     this.formattedData = JSON.parse(
-      AES.decrypt(this.data, appConfig.encryptionKey).toString(enc.Utf8)
+      AES.decrypt(this.data, appConfig.encryptionKey).toString(enc)
     );
   }
 
diff --git a/packages/backend/src/queues/delete-user.ee.js b/packages/backend/src/queues/delete-user.ee.js
index e01c340f..584807a1 100644
--- a/packages/backend/src/queues/delete-user.ee.js
+++ b/packages/backend/src/queues/delete-user.ee.js
@@ -1,7 +1,7 @@
 import process from 'process';
 import { Queue } from 'bullmq';
-import redisConfig from '../config/redis';
-import logger from '../helpers/logger';
+import redisConfig from '../config/redis.js';
+import logger from '../helpers/logger.js';
 
 const CONNECTION_REFUSED = 'ECONNREFUSED';
 
diff --git a/packages/backend/src/queues/email.js b/packages/backend/src/queues/email.js
index 223a97e7..c9da1804 100644
--- a/packages/backend/src/queues/email.js
+++ b/packages/backend/src/queues/email.js
@@ -1,7 +1,7 @@
 import process from 'process';
 import { Queue } from 'bullmq';
-import redisConfig from '../config/redis';
-import logger from '../helpers/logger';
+import redisConfig from '../config/redis.js';
+import logger from '../helpers/logger.js';
 
 const CONNECTION_REFUSED = 'ECONNREFUSED';
 
diff --git a/packages/backend/src/queues/remove-cancelled-subscriptions.ee.js b/packages/backend/src/queues/remove-cancelled-subscriptions.ee.js
index d444fd5e..20fd6d03 100644
--- a/packages/backend/src/queues/remove-cancelled-subscriptions.ee.js
+++ b/packages/backend/src/queues/remove-cancelled-subscriptions.ee.js
@@ -1,7 +1,7 @@
 import process from 'process';
 import { Queue } from 'bullmq';
-import redisConfig from '../config/redis';
-import logger from '../helpers/logger';
+import redisConfig from '../config/redis.js';
+import logger from '../helpers/logger.js';
 
 const CONNECTION_REFUSED = 'ECONNREFUSED';
 
diff --git a/packages/backend/src/routes/index.js b/packages/backend/src/routes/index.js
index 2a52de7a..8531516b 100644
--- a/packages/backend/src/routes/index.js
+++ b/packages/backend/src/routes/index.js
@@ -1,7 +1,7 @@
 import { Router } from 'express';
-import graphQLInstance from '../helpers/graphql-instance';
-import webhooksRouter from './webhooks';
-import paddleRouter from './paddle.ee';
+import graphQLInstance from '../helpers/graphql-instance.js';
+import webhooksRouter from './webhooks.js';
+import paddleRouter from './paddle.ee.js';
 
 const router = Router();
 
diff --git a/packages/backend/src/routes/paddle.ee.js b/packages/backend/src/routes/paddle.ee.js
index de6e17f5..aeea6453 100644
--- a/packages/backend/src/routes/paddle.ee.js
+++ b/packages/backend/src/routes/paddle.ee.js
@@ -1,5 +1,5 @@
 import { Router } from 'express';
-import webhooksHandler from '../controllers/paddle/webhooks.ee';
+import webhooksHandler from '../controllers/paddle/webhooks.ee.js';
 
 const router = Router();
 
diff --git a/packages/backend/src/routes/webhooks.js b/packages/backend/src/routes/webhooks.js
index 77889ae3..6d6898c9 100644
--- a/packages/backend/src/routes/webhooks.js
+++ b/packages/backend/src/routes/webhooks.js
@@ -1,9 +1,9 @@
 import express, { Router } from 'express';
 import multer from 'multer';
 
-import appConfig from '../config/app';
-import webhookHandlerByFlowId from '../controllers/webhooks/handler-by-flow-id';
-import webhookHandlerByConnectionIdAndRefValue from '../controllers/webhooks/handler-by-connection-id-and-ref-value';
+import appConfig from '../config/app.js';
+import webhookHandlerByFlowId from '../controllers/webhooks/handler-by-flow-id.js';
+import webhookHandlerByConnectionIdAndRefValue from '../controllers/webhooks/handler-by-connection-id-and-ref-value.js';
 
 const router = Router();
 const upload = multer();
diff --git a/packages/backend/src/server.js b/packages/backend/src/server.js
index e3d161c2..6396088e 100644
--- a/packages/backend/src/server.js
+++ b/packages/backend/src/server.js
@@ -1,7 +1,7 @@
-import app from './app';
-import appConfig from './config/app';
-import logger from './helpers/logger';
-import telemetry from './helpers/telemetry';
+import app from './app.js';
+import appConfig from './config/app.js';
+import logger from './helpers/logger.js';
+import telemetry from './helpers/telemetry/index.js';
 
 telemetry.setServiceType('main');
 
diff --git a/packages/backend/src/services/test-run.js b/packages/backend/src/services/test-run.js
index dd19b4af..88023821 100644
--- a/packages/backend/src/services/test-run.js
+++ b/packages/backend/src/services/test-run.js
@@ -1,7 +1,7 @@
-import Step from '../models/step';
-import { processFlow } from './flow';
-import { processTrigger } from './trigger';
-import { processAction } from './action';
+import Step from '../models/step.js';
+import { processFlow } from './flow.js';
+import { processTrigger } from './trigger.js';
+import { processAction } from './action.js';
 
 const testRun = async (options) => {
   const untilStep = await Step.query()