VTB Bank

For VTB Bank, H-Studio developed an Enterprise-Streaming-Infrastructure that processes millions of financial messages per second – with latencies under one second, full compliance, and 99.99% availability in continuous operation. The system now forms the technical backbone of numerous security-critical bank processes.

Challenge

The bank faced a business-critical modernization phase: The existing ETL system was too slow, too rigid, and not designed for real-time processing. The new platform had to: • Process transactions and events in real time • Detect fraud attempts immediately • Continuously update risk models • Handle massive data volumes stably • Scale seamlessly – without downtime • Fully meet compliance and security requirements In short: a real-time streaming architecture that combines banking standards with startup speed.

Our Approach

Event-Driven Architecture We developed a fully event-driven backend platform based on Apache Kafka as the central messaging backbone. Microservices + Kubernetes All services were containerized and orchestrated in a Kubernetes cluster: • automatic scaling • self-healing • rolling deployments without downtime Data Integrity at Massive Throughput To prevent data loss and duplicates with millions of events, we implemented: • a custom retry engine • deduplicated event processing • robust commit strategies • in-memory caching for hot paths Reliability & Observability Monitoring, logging, and alerting are based on: • Prometheus • Grafana • ELK Stack This gives the bank team real-time insight into latencies, throughput, and system health.

Results

• > 3 million events per second processed stably
• Latency reduced from 5 seconds to under 200 ms
• 99.99% uptime thanks to redundant cluster architecture
• Data pipeline reduced by 40% → less operational overhead
• Fully audit-proof, compliance-conforming architecture

Technical Stack

Why it Matters

The architecture principles from this project – event-driven design, microservices, streaming pipelines, and Kubernetes-orchestrated high-load systems – now shape many backend solutions from H-Studio. Everywhere that live analytics, transaction data, risk scoring, or real-time logs are business-critical, this system forms the basis for scalable, reliable, and secure backend infrastructures.