I just wanted to add that Andrew did reach out and offer an apology over the mistake in their process. As I told him, I think this speaks very highly of Predata. Very few companies would be willing to do such a human gesture. It sounds like they have the hiring management sorted out now and you can all effectively disregard my earlier comment. I am glad to hear it.
Last month was our first time posting in the HN Hiring thread, and we didn't know how much volume we'd get. We responded in a very ad-hoc fashion, without implementing enough process around it. After some promising candidates came through the HN pipeline last month, we built out a bit more process for this month -- your feedback is very valuable and we'll do our best to prevent similar failure modes from happening again for other candidates.