I applied online. The process took 2 weeks. I interviewed at Backbone Connect (London, England) in Aug 2019
Interview
Was interviewed with a lot of technical questions. Some of them were harder than others, but I managed to get to the next round of interviews. There was one particular person (Senior Network Engineer) who appeared to want to ask the more difficult Qs.
Interview questions [1]
Question 1
They asked a lot about Cisco routers, and networking principles.