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Hero Plus Payment Platform

Multi-gateway payment platform processing transactions across Thailand, Hong Kong, Malaysia, and Singapore. Built with Ruby on Rails, React, and AWS.

Ruby on Rails React PostgreSQL AWS Redis Stripe PCI DSS

Overview

As Founding Engineer at Hero Plus Group, I architected and built a comprehensive multi-gateway payment platform serving merchants across 4 Southeast Asian regions.

Key Achievements

  • Integrated 4 payment gateways (Nomupay, Stripe, 2c2p, Fiuu) with multi-currency support (HKD, SGD, MYR, THB)
  • Implemented PCI DSS-compliant security with AES-256-GCM webhook encryption, JWT/HMAC signature verification, and 3D Secure flows
  • Built automated payout & reconciliation system with sub-account management and intelligent grouping by merchant/currency/terms
  • Delivered full-stack solution reducing frontend load times by 42% and deployment time from 45 to 8 minutes

Technical Architecture

  • Backend: Ruby on Rails with service-oriented architecture (10+ service objects)
  • Frontend: React with responsive design
  • Database: PostgreSQL (AWS RDS) with Redis for caching
  • Infrastructure: AWS (RDS, S3, CloudWatch, Elastic Beanstalk)
  • CI/CD: GitLab pipelines with automated testing and deployment

Payment Flows

  • Customer-Initiated Transactions (CIT) with tokenization
  • Merchant-Initiated Transactions (MIT) for recurring payments
  • Bank instalment plans (Thailand-specific)
  • Apple Pay and Google Pay integration