Tech Stack
Java
Spring Boot
MySQL
Redis
REST APIs
AWS
Description
Engineered backend systems for a fintech platform focused on secure, low-latency digital payments, ensuring transaction integrity and scalability under concurrent load.
- Implemented idempotent payment APIs to prevent duplicate financial transactions.
- Designed retry and reconciliation mechanisms for failed or partial transactions.
- Optimized database queries and caching to reduce transaction latency.
- Built secure REST APIs for merchant integrations and wallet services.
Page Info
Payment Processing Engine
Designed transaction workflows with idempotency, retry handling, and failure recovery for financial correctness.