Design architecture, full cycle of enterprise software, end-to-end system. Manage tasks, project plan and schedule estimation, distribute tasks to members (team size 5) Training team members. Bugs handling, guarantee performance, scalability, stability Review code, optimize, and clean code following development standard and convention Build an access control system using facial recognition camera then allows users to unlock the door. Develop/Fine tuning AI models for object detection and human detection to count the number of people in the building. Develop software/middleware to control cameras, CCTV using vendor's API, SDK. Handle triggered events when detecting the motion detection, intrusion, face detection events. Research, develop, and integrate communication protocols using third-party cloud API such as TTLock Cloud, Tuya Cloud, SmartThings Cloud, Google Cloud. Hence, app can control and collect data from locks, sensors, lights, doorbell, etc. Develop RESTful API for mobile and web integration. Build/Deploy a Google Cloud Function to control IoT via Google Assistant. Build a file server using NodeJs. For cloud: MongoDB, PostgresSQL. For local server: MySQL. Develop a cloud platform for smart home system using open-source software to manage millions of users and IoT devices. Develop an OTA server for remote update using shell scripts (APT). Develop an intercom server for video call among web, mobile app users. Research and develop a VPN solution for communication among users in different networks Build mobile app for test API, design test cases to evaluate backend API. VSaaS: build and customize VMS desktop app for VSaaS platform using Network Optix source.

Build and optimize a machine learning model for few-shot learning tasks on constrained datasets. Implement and evaluate models for speech recognition, human's gesture detection, image classification tasks. Reduce model size so that it can deploy in IoT devices. Develop driver, firmware for low power IoT devices equipped with wireless transceivers. Write radio driver, MAC layer, and algorithm then upload binary to IoT for experiments. Analyze academic papers and propose new ideas to projects.

Develop, maintain, fix issues on software, android apps for Samsung mobile devices. Cooperate with chipset vendors such as Qualcomm, Marvell, Samsung Exynos to bring up Trustzone, BSP, security modules, apply Linux patches for Android devices. Signing public key, private key for trusted applications using sign server system and python scripts in Linux environment. Design test cases, verify security patches, updates Linux kernel, secure OS for android system. Integrate, maintain, fix issues related to security modules such as keymaster, gatekeeper, fingerprint, lock screen in the Android OS. Build binary, firmware, and release new software versions for smartphones, tablets. Run the Compatibility Test Suite (CTS) to detect issues, compatible problems whenever new Android version is released.