Bank Transaction Systems

1.Developed a high-reliability, low-latency, high-concurrency debit card transaction system using C++, Tuxedo, Oracle/Informix, Bash, and Pro*C, ensuring robust and scalable transaction processing.
2.Analyzed requirements, designed interfaces, and defined inter-system data formats for new services, enabling seamless integration and improved system interoperability.
3.Built batch settlement scripts for POS transactions and collaborated with cross-functional teams to test and validate services, enhancing operational efficiency and accuracy.
4.Implemented a monitoring (heartbeat) system to maintain continuous availability, automatically restarting failed processes with backup instances to minimize downtime.