[ksec]

Are places I could find or idea what are the most popular ( I guess may be "used" would be a better word ) programming language that is being used in these government sector, and in Tech in France in general?

[PoignardAzur]

Re France in general: no idea. It's a big country. (The industrial sector uses a lot of C++, like everywhere else.)

Re the government: you can look at the Github pages of various projects. The article mentions this list:

https://code.gouv.fr/#/repos

From what I remember of the last time I browsed through state startup projects, there was a lot of Node.js and Python.