What shell do you recommend?

Employers can go suck a big fat cock.

If the enployee can communicate with their managers and co-worker in English when needed and talk in an other language when they talk between them, there’s nothing wrong.

The documentation is usually dog shit.

The corporate culture does not allow appropriate time for the documentation as it is considered something that cost money without a quantifiable gain.

It permeates in the FOSS space as well since writing good documentation is a skill and it is not fostered in corporations. So devs start great projects with terrible documentation.