At American Express, I build and deploy Java 17 and Spring Boot microservices for banking transactions. These REST and GraphQL APIs process 2M+ daily transactions while maintaining 99.9% uptime.
I integrated Kafka event streaming for payment workflows and modernized legacy SOAP services into OAuth 2.0- and JWT-secured microservices. I also optimized PostgreSQL and Oracle workloads, reducing query latency by 40%.
Previously, I developed middleware platforms and web applications at Mastercard, and built Java backend services for payroll and payment processing at Walmart. My work has included REST APIs, database optimization, and CI/CD pipelines.
