Hyperscience reached out to me about this opportunity. I had an initial screening with the recruiter, which went very well. He further recommended additional phone screens. I spoke to 2 senior engineering / ML leaders in the company. Both conversations were engaging and interesting. Then, complete silence from the company. I followed by e-mail several times with the recruiter over the past couple of months, but no response. I find that to be a bit unprofessional. The courtesy of a response / rejection is simply good form.