• Architected and built the Android app from ground up from networking to UI with native Android experience with various libraries including Volley, Eventbus, UrbanAirship, etc

• Maintained the app at 4.5+ stars with 500k+ downloads

• Worked with marketing team to develop push notification campaign

• Thoroughly instrumented the app with Google Analytics to provide business insight

• Designed and implemented Cassandra binary protocol and API for Perl

• Designed and implemented the asynchronous task process system, using Gearman

• Architected, designed, and developed major components of big data platform using Cassandra, Hadoop, and Hive

• Developed and maintained site monitoring and alert system using Graphite, Carbon, Nagios

• Key contributor throughout the full development cycle of a multi-threaded C++ server for automated hedging using Agile methodology

• Developed trade and hedging simulations with profitability and trading algorithms

• Architectural design and develop a flow-based Prime Brokerage server to exploit the new business opportunities for OANDA to act as prime broker

• Implemented well structured and sophisticated Perl scripts to generate various financial reports

• Improved code quality with refactoring, setting up unit test framework and performing code reviews

• Provided analysis, diagnostic, and solution implementation on performance issues using DTrace on Solaris server