QEMU, system modeling and system software developer.

QEMU and system software developer.

QEMU and system software developer.

- Developed backend services for Emotibot AI chat bots and customer service quality inspect system using Go, including bot chats statistical analysis system, intents management system... etc.- Introduced Elasticsearch and Logstash to replace MySQL for our bot chats logging and statistical analysis system, which has improved the performance over 10 times comparing with the solution using MySQL.- Troubleshot issues of Emotibot statistical analysis system on Elasticsearch.- Implemented local file cache with LRU eviction policy in our AI customer service quality inspect system to reduce the required disk usage on small disk size machine.- Developed monitoring system using StatsD + Graphite + Grafana.- Developed a simple auto integration testing framework with Node.js, using Mocha + Chai + Nock libraries.

- Collaborated with marketing team to develop the latest features of Gulu² based on user feedbacks.- Developed and maintained Gulu² content management system (Ruby-on-Rails).- Led app team to build up Gulu² iOS and Android apps from scratch.- Introduced MVP (Model-View-Presenter) design pattern to Gulu² iOS and Android apps to decouple view and business logics (loose coupling) and increase testability.- Refactored Gulu² (with React Native) to a cross-platform hybrid apps to reduce the development cycle time of new features.- Integrated AWS SNS as Gulu² apps push notification service.- Adopted Firebase Analytics and Fabric services in Gulu² apps.- Awards: 2017 Startup@Taipei – Learning Entrepreneur’s Lab Special Award

- Designed a co-verification tool (based on QEMU emulator) for Marvell self-designed CPUs.- Ported Marvell self-designed CPU models on QEMU.- Hacked QEMU and developed methodology for Marvell self-designed CPU co-verification. Cooperated with IC design team to find out CPU design flaw and bugs. Generated and delivered test patterns to IC design team for CPU verification.- Designed a cross-check hardware module to co-operate with QEMU for Marvell self-designed CPU cross-verification, which had successfully narrowed down and found out the root cause of CPU design bugs.

- Analyzed the design architecture and configurations of uITRON.- Brought up uITRON on Andes platform (including context-switch and interrupt handlers).- Designed HAL (Hardware Abstraction Layer) for uITRON.