Payment Orchestration Platform
Designed and maintained a production-grade microservice for payment orchestration, integrating multiple payment gateways including Razorpay and Bill.com. The system enables seamless multi-provider transaction routing with enhanced reliability through improved logging, monitoring, and fault-tolerant service design.
The Problem
The company needed a unified payment system that could route transactions across multiple payment providers (Razorpay, Bill.com, and others) while maintaining reliability, compliance, and real-time observability. The existing monolithic payment flow was tightly coupled to a single provider, creating a single point of failure and making it impossible to add new gateways without rewriting core logic.
The Approach
Designed a microservice-based orchestration layer that abstracts payment providers behind a unified interface. Each gateway integration is a pluggable adapter that conforms to a common transaction contract. The orchestrator handles provider selection based on transaction type, amount thresholds, and fallback rules. Added structured logging with correlation IDs and health check endpoints for observability.
Results
- Multi-provider transaction routing with automatic failover between gateways
- New payment providers can be integrated in days instead of weeks
- Enhanced system observability through structured logging and monitoring dashboards
- Fault-tolerant design with circuit breakers preventing cascade failures
Lessons Learned
- Start with the adapter pattern early — retrofitting it onto existing code is much harder than designing for it upfront
- Correlation IDs across services are essential for debugging distributed transactions
- Payment systems need idempotency at every layer to handle retries safely