Backend development: • parent accounts to get the child progress, learning information/materials, photos, etc.;• notification system;• teacher accounts to update child progress and communication with parents, uploading learning materials, photos, etc.; • accounts with permissions to enroll children, accounting and managing payments;• enrollment system;• payment system;

• Contributed to design of Cash Transfer tracking system. • Contributed to development of Flume-NG Hbase serializer to store formatted Cash Transfer tracking logs into Hbase.• Contributed to development of Customer Service front-end and Hbase REST client back-end to populate customer's cash transfer trace.• Contributed to design of External Account Instant Verification system.• Contributed to development of Java Web Services of verification and aggregation layers. • Technical lead of onsite team of 2 developers and offshore team in India of 3 developers. • Permanent production support of Cash Transfer and External Account verification systems, code fixing and deployment to production.

• Contributed to design of Cash Transfer widget component.• Contributed to development of Cash Transfer Spring controller, BL and DAO. • Technical lead of onsite team of 2 developers. • Contributed to design of Market Trader browser rich client.• Contributed to development of Java applet of Market Trader. • Contributed to design and development of property file configurable dynamic GUI. • Permanent production support of Cash Transfer and Market Trader, code fixing and deployment to production.

• Lectured software development.• Assisted classes of engineering digital design.• Assisted classes of computational mathematics.