I had few job offers from HN actually,even though I am not even that active on it, unfortunately I have never took one since none of them was remote and I am still pursuing my masters in AI and Robotics in a far country.
My first instinct was that it was some kind of scam, but apparently these people did some hard research into my publicly available information (LinkedIn, etc). They didn't mention their name which almost set off a red flag for me.