- Server side rendering (SSR) - New delivery features - Payment features - Collaborate with Singapore and India teams - Performance, 1) code splitting. 2) dynamic loading - Testing 1) unit testing 2) end-to-end testing (puppeteer) - Refactoring Web performance, React.js, Redux, Jest, Puppeteer, Firebase, Webpack, Drone CI

- Single Page Application - Web App Security and Performance - Data Visualization - UX/UI - Host CI and CD server - Testing 1) unit testing 2) back-end APIs - Demo: http://slashtu.github.io/apps/appmonitor ­Monitoring web situation. 1) Rewrite and refactor service ( from Angular to React ) for security and performance - reduce loading time from 6.0s to 2.0s and improve security level. 2) Visualize security log and network topology

http://www.vivipos.com.au/ ­- POS UI/UX, Performance ­- EasyCard and E-­invoice integrations ­- Web application, Firefox extension ­- Database maintenance - Hardware integrations ­- Version Control and Release A POS solution based on Mozilla’s platform as a desktop app in JavaScript. As a full­stack developer, I am responsible for version control and code release. My workflow has three parts: 1) Discuss with marketing and designers about new product features and UI/UX updates. 2) Implement features such as E-­invoice, easycard integration, credit card integration and cloud­ reports. 3) Maintain client­side and server­side databases with thousands of transactions per month. POS solution, Linux, Vanilla JS, React.js, Node.js, Python, Django, Design Pattern, AWS

- Phone UI ­- Cisco’s Framework - Verify the protocol and handshaking - Packet analysis and debugging ­- Unit test ­- UML documents. ­- Version control and release Developed Cisco’s VoIP based on Linux. I was responsible for training and introducing Cisco’s framework to Wistron’s RDs in phone development. Because Wistron and Cisco co­developed phone together, I had to formulate a process for managing the code bases for both companies. The protocol is based on SIP. I need to verify the handshaking of Cisco’s library. Cisco VoIP, Embedded System, Linux, Java, C, Protocols, UML, Design Pattern