Payment Fulfillment Infrastructure

* Participated Fulfillment Engine project from architecture design, implementation, deployment, performance/throughput improvement to live taking 1.35 million transactions/day.

* Researched/Experimented/Designed/Implemented different approaches based on data statistics for performance and throughput improvement, including cache management/optimization, database update delay, chunk blob insertion, delayed post record insertion, ASF domain socket adoption.

* Improved the P2P transaction from 800ms to 300ms, improved system throughput from 40TPS to 100TPS per Engine node, and improved burst concurrent P2M transactions from 200 to 500 per Engine node.

Bank for Student Account

* Worked with Product and Web Dev teams, provided technical design and guideline to the dev team.

* Implemented bank functions for Student Account, including ‘Add/Remove Bank’ and ‘Add Funds from Bank’.

Dynamic Nav and Sitewide Navigation

* Designed and implemented data driven site navigation system, including navigation engine, tools for product manager to prepare/process data from spreadsheet to mmap package data.

* Worked closely with product manager to streamline site navigation publish process, and dramatically reduced time to market.