What languages ​​to learn for a back-end developer (web)?

Question

Backend

I want to become a back-end developer, but I don’t know what languages ​​to learn. I’m waiting for the opinion of experienced/practicing people)

Answer 1

Student of it(mathematical, economics) university - java/.net
You live in Moscow/St. Petersburg/Kiev/Minsk - java/.net/python
You don't live in the capitals - php
No profile education - php
Dofiga years - php
Do you want to find a job - php
Do you want write asynchronous layers for web services - node.js
Do you want to write good asynchronous layers for web services - Go
Tired of the wife and children, I want to sit down to do business and drink beer after working with men - Java
Tired of the wife and children, I want to sit and do business and drink beer after work and fuck women for 35
- .Net

Answer 2