Case Study - Modern Payslip Generation Platform for Global Businesses

Overview

In the modern business landscape, generating professional and accurate payslips remains a crucial yet challenging task for many organizations. MakePayslip was conceived to address this need by providing a user-friendly, efficient solution for payslip generation and management.

The platform has evolved from a free service to a freemium model, offering enhanced features and capabilities through premium subscriptions while maintaining accessibility with a 5-day free trial period. This transformation required careful consideration of user experience and technical architecture to ensure seamless service delivery.

Technical Architecture

Core Components

The system is built on two main pillars:

1. Landing Pages (Next.js)

• Modern, responsive design
• Optimized for search engines
• High-performance static pages
• Seamless integration with the main application

2. Main Application (Laravel Inertia + Vue 3)

• Jetstream authentication system
• Vue 3 components for interactive features
• PostgreSQL database for robust data management
• Stripe integration for subscription handling

What I did

Key Features

1. Intuitive Payslip Generation

• Step-by-step creation process
• Customizable templates
• Automated calculations
• Multi-currency support

2. User Management

• Secure authentication
• Role-based access control
• Company profile management
• Employee data management

3. Subscription System

• 5-day free trial
• Premium feature access
• Seamless upgrade process
• Flexible billing options

Technical Implementation

The project implements a robust user migration system to handle the transition from the free to freemium model:

/**
 * Repository interface for user migration
 */
interface UserMigrationRepositoryInterface
{
    /**
     * Migrate user from old system to new
     *
     * @param array<string, mixed> $userData
     * @return User
     */
    public function migrateUser(array $userData): User;

    /**
     * Verify user's subscription status
     *
     * @param string $userId
     * @return SubscriptionStatus
     */
    public function verifySubscription(string $userId): SubscriptionStatus;
}

Special attention was paid to maintaining data integrity during the migration process:

/**
 * Handle user data migration and validation
 */
class UserMigrationService
{
    public function __construct(
        private readonly UserMigrationRepositoryInterface $repository,
        private readonly StripeService $stripeService
    ) {}

    public function migrateUserData(array $oldUserData): User
    {
        $user = $this->repository->migrateUser($oldUserData);
        $this->stripeService->createCustomer($user);

        return $user;
    }
}

Impact and Results

The platform transformation has yielded significant improvements:

• Successful migration of existing user base
• Improved user experience with premium features
• Enhanced security and data management
• Streamlined payslip generation process

Technology Stack

• Landing Pages: Next.js, React
• Backend: Laravel 10, PHP 8.2
• Frontend: Vue 3, Inertia.js, Tailwind CSS
• Database: PostgreSQL
• Infrastructure: AWS, Nginx
• Payment Processing: Stripe