Experience

• • Design and development regular data pipeline for E-Commerce data product such as recommendation. Related tech stack including, Apache hive, Kafka, Spark with storage HDFS, MySQL, Redis store, Vespa search engine. • Enhance TW E-Commerce data team’s pipeline stability and efficiency and fix bugs for improving the data quality • Leading the data application development including API design and implementation, data preparation and pipeline develop for delivering E-Commerce recommendation result and cross functional communication with frontend user including web/iOS/Android Show less





• Data pipeline & warehouse • Build software based on Elastic libbeat for IOT real time data shipping • Spark streaming app and GCP cloud computing developement • ELK stacks/Kafka/Restful service integration • Improve Kafka-Logstash-ES-Restful data pipeline Web backend • Build restful service based on framework Dropwizard for data visualization Firmware • Evaluation and upgrade old Openwrt platform to the newest LEDE release and ported all required feature on it



• Android framework development • Android ConnectivityService • Data Usage feature • Android VPN function Motion sensor IOT device prototype development Android platform system Integration • Chip worked with: MediaTek MT2311 STMicroelectronics ST32 series • Sensors worked with: 9 axis sensor including gyro, accelerator and e-compass • I2C/SPI driver porting and development on Android for ST32 Microcontroller firmware update (C) • Develop ST32 Microcontroller firmware for sensor data capture and upload to SOC (C) Motion sensor data pipeline build & data analysis • Build up a software with GRPC protocol on PC and Android platform to catch sensor data from motion devices and serialize to Unity for motion analysis (C++ & JAVA) • Develop an algorithm to calculate angle between 2 motion devices based on Unity 3D model (C#) Show less



• Embedded Linux development and Integration • Based on OpenWRT • SOC chip worked with: Mediatek MT3352, MT7620 • Experience in wifi driver porting to Openwrt (C) • Experience in hardware NAT driver porting to Openwrt (C) • Custom vlan control and software implementation (C) • Openwrt based LuCI web development & design (Lua) U-boot development • Implement a fast and stable firmware update mechanism for G.hn chipset (C)