Specializing in payment gateways with over 2 years of experience, and a total of 4.5 years of expertise in Java backend development, building secure and high-performance financial transaction systems.
Java Backend Developer with over 4.5 years of experience in designing and building payment gateways, financial transaction engines, and backend services. Possess good knowledge of ISO 8583 messaging, Base24 integrations, and concepts like 3D Secure (EMVCo), MPGS, and CyberSource payment flows.
Familiar with architecting microservices using Java, Spring Boot, Kafka, and Redis. Hands-on exposure to the full transaction lifecycle—purchase, pre-auth, completion, refund, void, and cancellation—with a focus on optimizing performance and understanding PCI-compliant secure systems.
A high-performance transaction engine designed to process real-time payments by integrating Visa, MasterCard, and Rupay networks for transaction authentication and authorization.
A system that calculates transaction surcharges based on multiple business rules.
System to manage users with different artifacts as per given permissions for internal platform users.