I was approached by nChain recruiter, I had three interviews but the whole process took 3 months. I do found them very unprofessional and a waste of time and energy. The process is the worst experience of my life and I wish I have checked Glassdoor reviews before considering having an interview with them. It’s a very young company but I’m not sure what the future holds with them after reading other reviews about them. They don’t look like company that will offer security long term and they seem like they don’t have a vision. I think they are an absolute joke. Just be careful with them and plan your escape route if everything goes tips up.