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arfan

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4/11/2025
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paryoll.md
title:
Weekly Payroll System Architecture
author:
Admin
published:
2024-03-10
tags:
payroll
system-architecture
backend
frontend
security

1. Hour Collection Frontend

  • React form components with Formik
  • Real-time validation using Yup schema
  • Role-based access control (JWT authentication)
  • Mobile-responsive layout (Material-UI grid system)

2. Data Transformation Module

  • Node.js service for format conversion
  • CSV/Excel parsing (xlsx library)
  • Time format standardization (Moment.js)
  • Data encryption at rest (AES-256)

3. Email Integration

  • Nodemailer SMTP implementation
  • PDF attachment handling
  • Template engine (Handlebars)
  • Sendgrid API fallback

4. PDF Processing System

  • PDF parsing (pdf-lib)
  • OCR conversion (Tesseract.js)
  • Image optimization (Sharp)
  • AWS S3 storage integration

5. Banking API Integration

  • Plaid/OAuth2 implementation
  • Transaction auditing system
  • Two-factor confirmation flow
  • PCI-DSS compliance measures

6. WhatsApp Notification System

  • Official Business API integration
  • Media file streaming
  • Twilio fallback service
  • Message templating system

Security Requirements

  • SOC 2 compliance framework
  • End-to-end encryption
  • Audit logging (Winston)
  • Regular penetration testing

Deployment Architecture

  • Docker containerization
  • AWS ECS cluster setup
  • Auto-scaling configuration
  • CI/CD pipeline (GitHub Actions)
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