I am a Linux Kernel developer, upstream Linux Kernel contributor and maintainer of:

• SoC subsystem (ARM/ARM64),
• Devicetree bindings,
• Memory controller drivers, 1-Wire subsystem
• Samsung S3C/Exynos ARM and ARM64 architectures,
• Clocks, pinctrl, ASoC, PMIC and MUIC drivers for Samsung SoCs and Exynos based boards,
• NFC neard daemon (the user-space counterpart of Linux NFC user-stack).

I am quite active Linux kernel contributor and reviewer - see LWN.net KSDB statistics, e.g. v6.18 - v6.13, v6.12 - v6.7, v6.6 - v6.2, v6.1 - v5.16, v5.16, v5.15, v5.14, v5.13, v5.11, v5.10, v5.9, v5.6, v5.5, Linux Kernel Development 2016, v4.8, v4.3, v4.2, v4.1, v4.0. See also list of my Linux kernel contributions.