I applied through a recruiter. I interviewed at Niki.ai (London, England) in Nov 2015
Interview
We were asked to test their app Niki ai.
And was also some questions about python and also about web scraping.
It took nearly 4 to 5 hours to complete the process.
Had two rounds of interview
Technical and hr round.
Was decent interview. Relatively was easy for me. Two tech rounds happened at once for me... Hr round was negotiating the salary !