Backend2022

Payment Processing Microservices

Engineered a PCI-compliant payment processing system handling $50M+ in annual transactions with distributed microservices architecture.

The Challenge

Build a secure, compliant payment gateway that can handle peak transaction volumes with zero data loss and sub-second processing.

The Solution

Implemented hexagonal architecture with event-driven design, created circuit breakers for fault tolerance, built comprehensive monitoring with DataDog, and implemented PCI-DSS compliant data handling.

Results & Impact

Achieved 99.99% uptime across 2 years

Zero fraudulent transactions through ML detection

Process 100K+ transactions daily

Average settlement time reduced to 2 seconds

Technologies Used

Node.js
Go
PostgreSQL
RabbitMQ
Docker
Kubernetes
AWS SQS

Project Info

Category

Backend

Year

2022

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