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Case Study Financial Services

Real-Time Payment Gateway Processing 50K Transactions per Second

PayFlow Financial • Published 12 Mar 2026

PayFlow Financial, a leading payment processor serving banks across the UAE and Europe, was struggling with a legacy batch-processing system that could only handle 2,000 transactions per second. As their client base grew to include major retail chains and fintech platforms, they faced mounting pressure to deliver real-time payment processing at scale.

Kansoft assembled a dedicated team of 12 engineers to design and build a cloud-native payment processing engine from the ground up, featuring event-driven microservices on Kubernetes with Apache Kafka for message streaming.

Results Achieved

  • Faster delivery through automated provisioning workflows
  • 25x improvement in transaction throughput over the legacy system
  • Zero unplanned outages in the first 6 months of production
  • Settlement time reduced from 24 hours to real-time
  • Full PCI DSS 4.0 compliance baked in from day one
50K
Transactions/sec
99.99%
Platform Uptime
68%
Cost Reduction

Client Overview

PayFlow Financial needed to replace a legacy batch-processing system that could only handle 2,000 TPS. Growing client demand from retail chains and fintech platforms required real-time processing at scale with PCI DSS 4.0 compliance.

  • Industry Financial Services
  • Technology Stack Rust, Kubernetes (EKS), Apache Kafka, AWS
  • Services Used Custom Software, Cloud & DevOps
  • Project Duration 7 months
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