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Backend System Modernization for Scalable Payment Platform

ventionteams.com

Financial services

Information technology

Challenges in Payment System Scalability and Agility

Legacy systems hindered rapid feature deployment and scalability, requiring modernization to support growing user demand and international expansion while maintaining transaction reliability.

About the Client

UK-based fintech platform consolidating credit cards into a single app

Objectives for Backend Modernization

Streamline core payment mechanisms through microservices architecture
Enable deployment flexibility and scalability via AWS infrastructure
Implement new functionalities to enhance transaction processing capabilities
Support future international market expansion with robust backend systems

Core System Modernization Requirements

API integrations for multi-card transaction processing
Real-time payment routing optimization
Modular architecture for rapid feature deployment
Automated deployment pipelines for continuous integration

Technology Stack for Modernization

Golang

Node.js

AWS

RabbitMQ

Kubernetes

Symfony

Critical System Integrations

Payment gateway APIs
Third-party card issuer systems
Cloud infrastructure monitoring tools

System Performance Requirements

Horizontal scalability for 10x transaction volume growth
Sub-100ms latency for payment processing
PCI-DSS compliance for financial transactions
99.99% system uptime SLA

Expected Business Impact

Enable £9.4M funding utilization for market expansion, reduce feature deployment time by 60%, support 2M+ international users with zero-downtime architecture, and accelerate path to unicorn valuation through technical debt reduction.