I got hired in 2017 in Wrocław. Process was very short and simple back then. Company was just starting in Poland.
Full process took a few weeks:
1) initial interview with recruiter
2) homework (very simple task) via email
3) face to face tech interview with CTO
Tech interview was a conversation about my past projects, technologies I know, and how this can contribute to the project. No puzzles, no brain teasers etc. I got an offer in the same meeting.
I know that that the recruitment process got harder and longer afterwards.