I applied online. The process took 5 days. I interviewed at Chalkboard (UK)
Interview
After an initial call (audio only) I got a questionnaire type test for what seemed to be a slightly different role. Completed it and was scheduled for a call with an engineer who never showed up. Communication afterwards got more and more difficult, so at this point I gave up.
Interview questions [1]
Question 1
How would you design a database schema for a chat application using an SQL and a NoSQL database?