# C/ Python/ FreeRtos/ Linux Kernel module/ thread barrier 1. G3-plc system develop (on FreeRTOS system) Remote upgrade system design, So that G3-Plc system has an online upgrade mechanism Rf Driver porting, Mpl protocol bug fixing, Uart data racing issues 2. Linux kernel for Tcp connection High throughput Tcp connection. 3. Auto test framework system design for G3-plc/ Hplc/ Wi-SUN Using thread barrier to send data Use kernel driver to improving performance (all system 20%up, net throughput up 1400%) 4. contiki system on mcu(Wi-SUN) IPC critical section bug Firmware upgrade system porting

# C, fuse, RCU, atomic-lock, state machine, docker Cloud access gateway file system 1. This system like local NAS, caching the sub-data from the center-cloud system 2 .C programming system, using Fuse/ RCU/ atomic-lock/ lru to implement 3 .System include several module: Data management/ Metadata management/ Cloud api/ Lock management/ Policy management/ Recovery management/ Status Control management/ User management/ Upload task management Detail seeing the "Cloud Access gateway" project.

# C, dhcp server, TR-069, port mirror, kernel flash layout, kernel init 1. Openwrt system integration Integration with Intel 2.4/5G Gateway to TP-Link platform Porting Boot, kernel and starting flow 2. Home Gateway porting DHCP option 60 porting, for Setting ACS server URL Dual-image design, modify kernel layout, Port mirror , Packet capture

# C, Wimax, ONVIF, zigbee, Surveillance system 2007 ~ 2010 wimax system mac layer developer 2011 ~ 2015 ONVIF surveillance system developer, surveillance on embedded system developer, surveillance embedded system integration. 2016 ~ 2017 Iot sensor device porting and middle ware system coding