• Develop and maintain UC Messenger (UCM) application on iOS/Android and MacOS platforms. UCM is a part of Unified Communication and Collaboration (UC&C) system. UCM provides optimized services for UC&C, including real-time messaging, conversation, voice/video/conference calls, screen sharing, team/channel collaboration, mobile, and IP telephony. • Work closely with customers (companies) to get new requirements, do updating/maintaining, and developing new features. • Work closely with Mobile team members to be a mentor/leader to share experiences, applying new technologies. • Review the code to increase quality of code. • Participate in international exhibitions/conferences to introduce company products, build up new connections as well as look for new customers (especially in Asia countries).

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• Developed an IoT based home automation system for a connected setup. Used Raspberry Pi 3 Modal B board for controlling Lights, Air Conditioner and collecting data from Temperature and Humidity sensors. (Device: Raspberry Pi 3 Modal B, OS: Linux, Language: Python) • Developed Data Mining Server for mining the data from IoT based home automation system (Device: PC, OS: Windows, Language: Java) • Developed and evaluated Smart Thermostat based on Rule Engine and Data Mining for controlling Temperature in house automatically. (Device: Odroid board, OS: Android, Language: Java) • Proposed Smart Thermostat method which operates in three modes: Manual mode, Auto-Away mode, and Auto-Schedule mode. • Proposed schedule algorithm to automatically learn user’s pattern of setting the Thermostat set-point temperatures from historical data and produce a weekly schedule for the thermostat setting. (The weekly set-point schedule designates when and what set-point value should be set) • Proposed 13 Rules to consider Mode and Status setting. When status is either cooling or heating, then a set-point value from the schedule table will be adjusted by consideration of operative temperature and humidity for the thermal comfort zones of ASHRAE. • The feasibility simulation showed that the proposed Smart Thermostat can achieve energy savings better without sacrifice of human comfort.

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• Collaborated with iOS team members to develop the fitness application (Manulife Move). • Worked directly with the customer from Hong Kong to get the requirement, discussed technical issues, and solved problems if any. • Researched Health Kit framework to connect with Apple Watch and get all information about: steps, weight, calories burned. • Connected with other tracker devices: Fitbit & Misfit

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• Collaborated with iOS team members to develop Expat La! project - A Social Q&A application. • Designed database structure and built the core framework. • Communicated across teams to confirm and transfer requirements to new team members. • Researched VIPER & ReactiveX design pattern to build Q&A platform.

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• Made project planning/estimation to get approval from customers. • Wrote Technical Design Document and apply those. • Managed iOS team (5 members) with Scrum process such as planning, breaking down tasks, assigning to all team members. • Took responsibility to develop main & complex functions, build core framework, and review code. • Trained Technical skills & Scrum process for team members. • Researched Cocos2d framework to make 2D game Kidsbooks:Tam&Cam. • Researched Sprite Kit framework to build Kidsbooks platform, and apply it to implement all stories of series of interactive books such as: Kidsbooks: Legendary Giong. • Researched Media Player framework & streaming technology to build Disc Plus project with the following features: downloading Music/Movie, playing offline/streaming Music/Movie.

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