Some languages (for exemple Golang) allow you to use any utf8 symbols in your code, so you can name your variables in Russian, for example - https://play.golang

Some languages (for exemple Golang) allow you to use any utf8 symbols in your code, so you can name your variables in Russian, for example - https://play.golang.org/p/oWs6mc-JOpI https://play.golang.org/p/oWs6mc-JOpI There is a russian platform 1C:Enterprise that has it's own scripting language that uses syntax similar to Visual Basic and Cyrillic characters too. You can develop your own language that can allow you to write in Church Slavonic if you wish so: https://ic.pics.livejournal.com/ibigdan/8161099/4947638/4947638_original.jpg https://ic.pics.livejournal.com/ibigdan/8161099/4947638/4947... But the thing is - we write in english because it's a defacto standart right now. Is it a prerequisite for being a software engineer? No. Is it a prerequisite for when you decide to work with an international team or contribute to an opensource project? Pretty much yeah.