Todmy

VPN Checkout System - Technical Design

Date: November 1, 2025

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Table of Contents

1. System Overview
2. Architecture Components

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QA Engineer Take-Home Test Task

Overview

This assessment evaluates your QA skills through analysis of our mental health application "MindWell" (similar to Headspace/Calm but with team management features). Complete all sections in a single document (maximum 3 pages).

Product Context

MindWell consists of:

• Flutter-based mobile app for employees to complete assessments and follow mental wellness journeys
• Nest.js backend handling user data and analytics
• Vue 3 admin panel for company managers to monitor team mental health metrics

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// MARK: - Library

@propertyWrapper
struct Observe<Value> where Value: ObservableValue {
    var value: Value
    var projectedValue: Hook<Value>

    public init(wrappedValue value: Value) {
        self.value = value
        self.projectedValue = Hook(value)

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// MARK: - Library

struct Hook<Value> {
    private var data: Value
    private var listeners: [(Value) -> Void] = []
    var value: Value {
        get {
            return self.data
        }
        set(newValue) {

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// MARK: - Library

protocol ObservableModel: NSObject {
    var observer: Observer<Self> { get }
    func observe<Value>(_ keyPath: KeyPath<Self, Value>, changeHandler: @escaping (Value?) -> Void)
}

extension ObservableModel {
    func observe<Value>(_ keyPath: KeyPath<Self, Value>, changeHandler: @escaping (Value?) -> Void) {
        observer.observe(keyPath, changeHandler: changeHandler)

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const Resizable = require('resizable')

new Vue({
	el: "#app",
  methods: {
    onResize() {
    	this.$refs.chatWindow.style.transform = ''
    }
  },
  mounted() {

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// Welcome! require() some modules from npm (like you were using browserify)
// and then hit Run Code to run your code on the right side.
// Modules get downloaded from browserify-cdn and bundled in your browser.
const Vue = require('vue')
const Resizable = require('resizable')

console.log(Resizable)
// console.log(Vue)