I applied online.

I was asked to create an account on the website and finish some online programming tests. Those tests usually last between 50 to 3h20min each(!), and to apply for the position I needed to finish 5 of them. 8 working hours according to the maximum time limit. The process is just terrible, questions are not precise, but only one answer can be chosen. They are far away from what will be required in real life from the developers. Total lack of respect for candidates' time.

If it's possible to modify pull request once created

which command in git can be used to return the shortest SHA1 hash

Which error you get if you push to the repository, and someone else pushed his changes just because of his...