I discovered that there is an internal startup in the company related to video surveillance. And since it involves video surveillance, there are IP cameras with Linux on board. I gathered more information, met the team, and went through an internal interview. After a while, I started handling system tasks with Linux: my goal was to create a Linux firmware. It was the time of soldering irons and reverse engineering when you needed to figure out how to launch the Linux kernel on new hardware. Mostly, I worked with the Uboot bootloader source code, Linux kernel source code, and wrote some system software in C responsible for device initialization.