I applied through a staffing agency. The process took 1 week. I interviewed at CrazyCall (Wrocław) in Oct 2016
Interview
First we agreed by e-mail for a first and in person meeting. There I was asked questions about Java language (e.g. "How are threads initialized?").
After it, I was asked to solve a small task and hand it online. Although I have not passed this stage, I was told that the following stage was a last and informal meeting with the team and everything would be done.