Citibank is known for having over 200 Million clients in over 100 countries and is considered one of the world's largest credit card providers. The client I worked with was based in Singapore and is handling Asia's largest point of sales transactions. The project I was working on averages almost 500 transactions per minute and is used in real-time payment processing in reward points redemption and accumulation.

• Development Lead Role which is tasked to design, consult with architect, code, assign tasks and implement modules of Loyalty Rewards project

• Ensured high availability for point of sales machines for credit cards

• Tuned the application, ensured quality and timely outputs by constantly checking and fixing stale indexes, overgrown partitions, poorly optimized queries

• Supported the continuity of end-of-day batch and real-time online

• Participated in the daily scrum meetings as a Technical advisor

• Used Java, Oracle, XML SOAP, EBCDIC, JAXB, IBM WebSphere, SVN