Ji-Hun Kim Email & Phone Number

Seoul, Kr

Suwon, Gyeonggi-Do, Korea

# Linux Kernel Developer for Engineering Productivity (FEB 2019 ~ Present) - Responsible for the development and maintenance of Samsung’s Android Linux kernel unit test environment such as test automation, test coverage/result monitoring system, and command-line productivity tools - Built a system that 400+ systems and kernel engineers used to implement 3000+ test cases - Built a unit test environment that every Samsung Galaxy flagship smartphone is tested in before… Show more # Linux Kernel Developer for Engineering Productivity (FEB 2019 ~ Present) - Responsible for the development and maintenance of Samsung’s Android Linux kernel unit test environment such as test automation, test coverage/result monitoring system, and command-line productivity tools - Built a system that 400+ systems and kernel engineers used to implement 3000+ test cases - Built a unit test environment that every Samsung Galaxy flagship smartphone is tested in before shipping - Gave a year-long lecture series about Linux kernel unit test for internal kernel engineers(400+)# Sabbatical (FEB 2017 ~ JAN 2018)# Linux Kernel Developer (FEB 2013 ~ JAN 2019) - Responsible for the development of a Linux kernel device driver (MUIC, USB Type-C, Adaptive Fast Charging, LCD Display Driver) under ARM SoC BSP(Samsung S.LSI, Qualcomm, MediaTek, Marvell) for a variety of Galaxy models- Designed and implemented a device driver that accelerated the new device bring-up time by 90% by efficiently separating reusable parts across many different devices------ Developing Linux Kernel Device Drivers for bring-up Android smartphones & mobile devices for bring-up BSP- Developing and improving Device drivers for LCD-Driver-IC, MIPI protocol, Micro-USB-IC, USB-type-C-IC, LED, Adaptive Fast Charging - In charge of maintaining a device driver for Samsung kernel in many projects (Galaxy A7/A5/A3/J1/J2/J7/TAP2/TAP4/GrandPrime/Xcover/CorePrime/GearFit1/Etc.)- Using kernel common library (module/GPIO/IRQ/I2C/device-tree/driver-model/pinctrl/UART/notifier-call/rbtree/Sysfs/Etc.)- Experience in a variety of BSP of ARM SoC (Samsung S.LSI, MediaTek, Marvell)- Developing, debugging, testing, troubleshooting, analysis the root cause by hardware and software debugging skill- Creating a basic Linux Distribution from scratch Show less

Seoul, Korea

- Firmware programming on ARM cortex-M3, ATmega 2560/128/8- Firmware programming to control Bluetooth/RF/UART/SPI, servo/stepping/DC motor, IR/bending sensor, EEPROM - Organizing schematics and electronic component for prototype of PCB - Design hardware mechanism- Experience as project lead with team