Unifi Switch 16/24/48 PoE Gen2- Design/Implement GPIO C APIs- Fix spanning-tree performance issue- Fix IGMP snooping querier issue- Enable oopsdump/kernel ramoops feature- Resolve several existing software performance issue and bug fixes Unifi New Switch Product- help bring up new board -- Reset button -- Port FAN control and temperature sensorUnifi Smart Power Product- Design/Implement Meter MCU driver -- Calibration -- Firmware Update -- Control Relay State -- Status Report

Lilee QoS Feature Required by Customer (HK MTR) Design and implementation- Enabling different packet IP DSCP marking with different VLAN- Enabling different packet IP DSCP classification to different priority queues- Enabling Active Queue Management Technology (FQ CODEL) for better Fairness and Delay Control. Also available (fairness) for tunnel traffic- Design and implement an algorithm called Bottleneck Bandwidth Control (working with tunnel technique), which enables a cellular link applying local QoS rules. The method is to effectively and passively measure delivery rate and RTT of tunnel traffic and runtime-control a rate limiter to be the bottleneck bandwidth link.Design and implement application visibility and control (Deep Packet Inspection technique) of Lilee fog nodes (DTS/LMS/STS, industrial grade network appliances)Initiate, design, and implement WiFi AP features for Lilee fog nodes (DTS/LMS/STS, industrial grade network appliances).Design and implement resource-constrained embedded software and its cloud on-boarding (via NBIoT).- Based on Atmel SAM3X8E SoC / SIM7000 Modem- Design OTA Update- Enabling CPU Wait-mode, RTT/RTC wake-up

Lead 6 software developers- Design with the team, task break down, and prioritization- Deliver and release the softwarePerformance Enhancement for L2 Overlay Technology - Cowork with software architect to redesign the existing single-threaded L2 tunnel to multiple-threaded (Be able to utilize multi-core CPUs) based on NUMA architecture.Initiate the design of the IDL-based CLI framework and inter-process middleware for the fog node.Cowork with FPGA team to prototype 220 MHz radio Link. Design and implement the Linux kernel network driver and tools to adapt to the fog node.

Design and implement cross platform (Windows/Linux/MacOS) streaming engine for NUUO viewerDesign and implement a buffer management module specialized for streaming purpose

New platform BSP DevelopmentBurning test tool development for factory testBackport ext4 filesystemInvestigate difficult issues and provide solutionsProvide low-level control and management APIs for GUI integration

Features of PSTN (FXO/FXS/ISDN) Channels for VoIP IPPBX ApplianceTuning performance and enhance the quality and voice quality for the appliancesDesign and implement the FTP application layer gateway (ALG)

Cisco Call Manager test tool development- RTP Playback- Event-triggered log