Project Overview
A high-throughput transaction processing platform handling non-realtime interbank remittance operations for BIDV's Payment Hub (Phase 2). The platform processes deferred remittance transactions across multiple payment channels : interbank networks, e-payment platforms, and retail payment networks : with multi-leg reconciliation (Core ↔ Gateway ↔ Channel), batch processing, and multi-dimensional reporting capabilities.
Challenges & Pain Points
Massive Transaction Volume
Processing high volumes of interbank remittance transactions daily across multiple payment channels required extreme throughput. Legacy systems could not handle peak-hour loads without degrading response times for other banking services.
Manual Reconciliation Gaps
Multi-leg reconciliation between core banking, the payment gateway, and downstream payment channels was manual and error-prone. Discrepancies in transaction status across different legs could take days to identify and resolve.
Inefficient Batch Processing
The legacy system processed remittance batches sequentially, creating bottlenecks during end-of-day settlement. Failed transactions in a batch blocked the entire queue, requiring manual intervention to restart processing.
No Real-Time Transaction Monitoring
Operations teams had no dashboard to monitor transaction flows in real time. Failed or stuck transactions were only discovered during next-day reconciliation, meaning potential issues went undetected for 12-24 hours.
Our Solution
High-Performance Transaction Engine
Architected a non-realtime remittance processing engine using event-driven architecture with Apache Kafka for centralized logging and message routing. Transactions are queued, validated, and processed in parallel batches through the processing engine. Failed transactions are isolated and retried without blocking the pipeline, with timeout and exception handling built into the flow.
Automated Reconciliation Engine
Built an automated multi-leg reconciliation engine: core banking ↔ payment gateway, payment gateway ↔ downstream channels (interbank, e-payment, retail). Each leg is matched independently with detailed diff reports. Auto-correction rules handle common mismatches; edge cases are escalated to operations with full context.
Payment Gateway Integration Layer
Developed a robust integration layer connecting the processing engine with the payment gateway, which routes transactions to downstream channels: interbank networks, e-payment platforms, product payment services, and retail distribution networks. The gateway handles message formatting, channel routing logic, and retry mechanisms for resilient multi-channel operations.
Multi-Dimensional Reporting Dashboard
Delivered a comprehensive reporting suite: transaction volume analytics, settlement status tracking, reconciliation dashboards, and exception reports. All reports support drill-down filtering by date, branch, transaction type, and status : with Excel/PDF export.
Technology Stack
Financial & Banking Domain Expertise
Interbank Payment Processing
Deep expertise in Vietnam's interbank payment infrastructure: interbank message protocols, multi-channel payment routing (interbank, e-payment, retail), settlement cycles, and regulatory reporting requirements mandated by the State Bank of Vietnam.
Transaction Reconciliation Standards
Implemented multi-leg reconciliation logic compliant with the client's internal audit standards, covering balance reconciliation, message reconciliation per payment channel, and accounting reconciliation. Configurable matching rules per transaction type and channel.
High-Availability Financial Systems
Deployed on containerized infrastructure with enterprise container orchestration and centralized logging. Enterprise-grade identity management and API gateway for secure, scalable API management. Designed for high availability on private cloud infrastructure.
Project Highlights
- High-throughput non-realtime remittance processing
- Automated multi-leg reconciliation engine
- Event-driven architecture with Apache Kafka
- Multi-dimensional reporting & analytics dashboard
- Enterprise-grade containerized deployment on private cloud