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Fintech Digital Banking

Building the Future of Open Banking: How FinanceHub Connected 15 European Banks with 50,000 Transactions Per Minute

XCodeIT developed a high-performance, PSD2-compliant open banking platform that processes over 50,000 transactions per minute across 15 European financial institutions, delivering 99.99% uptime and enterprise-grade security.

Client: BancoDigital

https://BancoDigital.xcodeit.io/dashboard

API Gateway

PSD2 Compliant

Transactions/min

50,247

+18.5%

Banks Connected

EU Region

Uptime

99.99%

30d average

Latency

45ms

-12ms

Real-time API Traffic

Connected Banks

Santander

BNP Paribas

Deutsche Bank

ING

50,000+

Transactions Per Minute

European Banks Connected

99.99%

Platform Uptime

PSD2

Certified Compliant

The Challenge

FinanceHub faced a critical market opportunity: the PSD2 directive had opened European banking markets, but legacy infrastructure made real-time financial data aggregation nearly impossible. Their existing systems couldn't handle the transaction volumes required for a pan-European platform, compliance requirements were complex and evolving, and third-party API integrations were unreliable.

The company needed a complete technological transformation—a platform capable of securely aggregating financial data from multiple banks across different countries, processing tens of thousands of transactions per minute without degradation, ensuring bulletproof security and full PSD2/GDPR compliance, and providing real-time synchronization across distributed systems.

Failure wasn't just a technical setback; it meant losing first-mover advantage in a rapidly consolidating market where competitors were racing to establish dominance.

Our Solution

XCodeIT architected and delivered a cloud-native, microservices-based open banking platform engineered for extreme scalability, security, and regulatory compliance:

Built a highly decoupled system using .NET 8 microservices, enabling independent scaling of critical components like transaction processing, authentication, and data aggregation.

Implemented asynchronous messaging patterns using RabbitMQ to handle peak loads of 50,000+ transactions per minute, ensuring zero message loss and guaranteed delivery.

Designed an optimized PostgreSQL database architecture with read replicas, connection pooling, and query optimization to support sub-100ms response times at scale.

Deployed distributed Redis caching to minimize database load and accelerate frequently accessed data, reducing average API response times by 70%.

Created an intuitive, real-time React dashboard enabling financial institutions to monitor transaction flows, manage API credentials, and access comprehensive analytics.

Leveraged Azure Kubernetes Service (AKS) with intelligent auto-scaling policies, load balancing, and multi-region deployment to guarantee 99.99% uptime and disaster recovery capabilities.

Technologies Used

.NET 8 React PostgreSQL RabbitMQ Azure Redis Kubernetes

The Results

50,000+

Transactions Per Minute

Peak processing capacity with sub-second latency

European Banks Connected

Pan-European coverage across major financial institutions

99.99%

Platform Uptime

Enterprise-grade reliability with automated failover

PSD2

Certified Compliant

Full regulatory compliance with European banking directives

"XCodeIT didn't just build a platform—they built our competitive advantage. Their expertise in distributed systems and regulatory compliance enabled us to go from concept to market leader in under a year. The platform handles our growth effortlessly, and our banking partners trust it completely."

Marcus Andersson

CTO , FinanceHub

Project Details

Industry: Fintech / Open Banking
Services: Custom Software Development, Cloud Architecture, API Integration, DevOps & Infrastructure
Duration: 8 months
Team Size: 8 specialists