I applied through a recruiter. The process took 3 days. I interviewed at Genestack (Saint Petersburg, Sankt-Peterburg) in Feb 2018
Interview
Quick, clear and friendly: I had been submitted to the online interview via Skype and then I passed the offline interview in Genestack office. People were very friendly, I had to answer simple questions about my own role.
Interview questions [1]
Question 1
Make a simple library which creates circles, squares, and ellipse