I applied online. The process took 2 months. I interviewed at Hazelcast (London, England)
Interview
It was in 2020. I had 2 interviews with concurrency and JMM focus, 2 assessments as a home test. They were not trivial, so I really enjoyed the interview. Overall, the process took a bit long time, since AFAIK they didn't have a separate recruiter, but their team leader was in contact with me.