There are several operating systems that you can use throughout your career and each one works with what you feel most comfortable with, so there are companies that give you the option to choose which operating system best allows you to work.
There are several operating systems from the most well-known like Windows, macOS, Linux, iOS and Android to the me systemsnos known like ReactOS, Syllabe, SkyOS or even ChromeOS.
As we all have nosour work methods and we are used to the most diverse materials and resources available, not always nos we feel comfortable working with any system and therefore we came to let you know the companies where you have freedom to choose the one/s with which you best develop your projects!